Keyboard shortcuts / hotkeys for brightness and volume stopped working, also cannot install anything from pamac

[Fabby]

@Tribunus

I can’t link nor can I add media items to my text, this is really counter-productive

Please read this:

[HowTo] Post screenshots and links

Difficulty: ★☆☆☆☆ You’ve probably been sent here by a more experienced user because you cannot post links nor screenshots so please follow the simple instructions of this tutorial below to allow you to post both screenshots and links in any post and have a short explanation of why you can’t do this easily… If you’re reading this in response to a question, please click the green link above this text to bring you to the full unabridged text of the tutorial itself. If you …

@Tribunus

but I still can’t find aur packages nor official packages by pressing tab [using pacman]

Forgot to say: pacman is an Arch utility, thus created for experts, by experts.
Instead, use the standard Manjaro tool

pamac search

to find packages and have a look at pamac --help for other commands.