Always, always post your garuda-inxi when asking for help.
Also what exactly are you confused about? You have pipewire in your system, pulseEffects is not going to work. So use easyeffects.
Just remember that you need to install all of easyeffects optional dependencies as well without them easyeffects is basically useless, you can’t do anything.
garuda-update -- easyeffects calf lsp-plugins-lv2 zam-plugins-lv2 mda.lv2
While installing it will ask which repository to install lv2 plugins from and will give you a bunch of choices. I will suggest going with element. Reason being it’s the most light weight of them all. With allmost no extra dependencies needed to be installed.
I am linking the preset I use, it works quite nicely for my system but I can’t guarantee for you. You can use it as a reference or a starting point if you wish or ignore it if you want.
The preset is placed in the ~/.config/easyeffects/output/ directory as a json file and you need to explicitly ask easy effects to load it the first time.