Yes, remember that to keep AUR packages updated you have to launch garuda-update with the -a parameter.
Read\search also about AUR packages. They are something different. Arch packages are pre-built binaries, AUR packages are built in your machine every time you install or update them and this makes a big difference.
If you really like an AUR package and it works fine, there is a thread where you can ask to add it in the Chaotic-AUR repo.
That repo builds AUR packages for us, so you install them in the normal way, e.g. sudo pacman -S <name>.