There are several changes in there that won't make any difference, for example installing linux-firmware-git (e.g. you can see in the commit log that there's nothing related to this wifi chipset).
Disabling power saving seems like a promising route, but given the issue the OP is having happens with USB tethering this seems highly unlikely to be wifi-related.
Therefore, the OP should:
Yes, I had to change kernels as well. You're right about that... I left that part out because I wanted to see if those changes worked before I told him what kernels I downloaded to get everything (for me) working.
So, to confirm, you left out the one thing that actually solved the issue for you? 
Well...
If his problem is related to the system's chipset sleeping, it would be great if fixing that issue would end this problem before telling him to download linux, linux-amd, linux-tkg-bmq-zen.
OP, if you do decide to download those kernels like I did you might (it seems like I had to) type 'sudo grub-mkconfig -o /boot/grub/grub.cfg' after each install.
It's been over a month since I had to do all this, but when I get home later tonight I can reference those notes I had.
Sorry for late reply, was asleep.
I will try all of this now, but how do i install a different kernel offline? Cause online if im lucky it will take about 5hrs 
if the download wont stop itself of course.
Not a website, when you click on Wifi, it shows download and upload speed.
I just noticed something really weird, so at times, its super rare but it happens, the wifi goes up to like 50mb/s and immediately drops down to where it was (5KiB/s-200KiB/s).
Ahh, it's normal, because if you're not using internet, it will show 0 speed.
Just test on any website.
I suspect this is probably just a slow mirror, and that there's actually no issue with "wifi" at all.
Given the OP is opposed to providing any useful information, or trying the various suggestions to narrow down the cause of the "issue", this thread is going nowhere.
Ive tried almost everything what they told me to do, if there is any information you want, please let me know ill send it. I know this is difficult, but i really want to solve this thing. I like linux a lot just its a little too difficult for me since im inexperienced in it.
Oh and i dont know if i already asked, the only thing i didnt try is switch the kernel, how do i install a different kernel offline?
You need to feed back and tell us the specific results of what you have tried. “I’ve tried everything and nothing works” is not an appropriate response.
sudo pacman -U <path_to_kernel_and_headers>
Did you try searching for the answer?
As Jonathon states, post all outputs when you have tested a solution such as installing a driver or kernel etc.
I tried the terminal commands, installed the driver i was told to, disabled the MAC randomizer, disabled the metered thing or how is it called? I checked the wifi settings if there is something wrong. As i already stated before, i tried USB thethering and it was the same
And as already stated, that means it’s not an issue with the wifi chip in the laptop.
Therefore:
Rather than posting a list of network diagnosis steps again I’ll point to these Arch wiki pages:
ping google.com
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=88 ttl=57 time=13.3 ms
64 bytes from arn09s19-in-f14. 1e100 .net (216.58.207.238): icmp_seq=89 ttl=57 time=13.0 ms
64 bytes from arn09s19-in-f14, 1e100 .net (216.58.207,238): icmp_seq=90 ttl=57 time=13.4 ms
64 bytes from arn09s19-in-f14, 1e100 .net (216.58,207,238): icmp_seq=31 ttl=57 time=13.5 ms
64 bytes from arn09s19-in-f14, 1e100 .net (216.58.207.238): icmp_seq=32 ttl=57 time=13.2 ms
64 bytes from arn09s19-in-f14, 1e100 .net (216.58.207.238): icmp_seq=33 ttl=57 time=12.6 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.297,238): icmp_seq=94 ttl=57 time=16.9 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=95 ttl=57 time=13.0 ms
64 bytes from arn09s19-in-f14, 1e100 .net (216.58.207.238): icmp_seq=96 ttl=57 time=14,2 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=97 ttl=57 time=13.3 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=98 ttl=57 time=12.6 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=99 ttl=57 time=13.0 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.267.238): icmp_seq=100 ttl=57 time=12.6 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207,238): icmp_seq=101 ttl=57 time=12.7 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=102 ttl=57 time=12.7 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=103 ttl=57 time=34,6 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=104 ttl=57 time=14.2 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=105 ttl=57 time=15.3 ms
64 bytes from arno9s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=106 ttl=57 time=12,6 ms
64 bytes from arn09s19-in-f14.1e100 .net (216.58.207.238): icmp_seq=107 ttl=57 time=13.0 ms
64 bytes from arn09s19-in-f14. 1e100 .net (216.58.207.238): icmp_seq=108 ttl=57 time=13.3 ms
--- google .com ping statistics ---
108 packets transmitted, 108 received, 0% packet loss, time 107167ms
rtt min/avg/max/mdev = 12.537/14.770/49.488/5.179 ms
marsas@marsas in - took 1m47s
I made spaces between nets because i cant post more than 5 links
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=12.8 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=118 time=12.7 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=118 time=12.7 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=15.9 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=115 time=13.0 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=115 time=12.9 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=115 time=12.7 ms
64 bytes from 8.8.8.8: lcmp_seq=3 ttl=115 time=18.5 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=115 time=12.7 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 times12.7 ms
64 bytes from 8.8.8.8: icmp_seq=11 ttl=115 time=12.7 ms
64 bytes from 8.8.8.8: icmp_seq=12 ttl=115 time=13.2 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=19.6 ms
64 bytes from 8.8.8.8: icmp_seq=14 ttl=115 time=12.8 ms
64 bytes from 8.8.8.8: icmp_seq=15 ttl=115 time=14.3 ms
64 bytes from 8.8.8.8: lcmp_seq=16 ttl=115 time=24.9 ms
64 bytes from 8.8.8.8: icmp_seq=17 ttl=115 time=14.5 ms
^C
--- 8.8.8.8 ping statistics ---
17 packets transmitted, 17 received, 0% packet loss, time 16027ms
rtt min/avg/max/mdev = 12.659/14.237/24.919/3.057 ms
Nothing wrong with the network then.
So, this comes back to the original issue - what specific problem are you actually having?
So i just noticed something weird, i was trying to download a game on steam (extremely slow), my pc showed me a notification "Limited connectivity".
So the wifi is really interesting, its on 0bit/s, jumping up and down to 5-100KiB/s, sometimes, rarely it changes to 2-100mb/s, but i cant do anything properly, cant even go to a single website, well it would take about 10minutes to load.
I think that Garuda doesn't work for you and so you should just use Windows instead.
There are some troubleshooting links posted above if you care to read them.
PM a moderator to re-open this thread if you come back with something substantive.