I started the ubuntu path on warty, was a distro vagrant after unity arrived, switched to debian a while which was and is fine, decided to give manjaro a shot and couldn’t stand it, but oh how that AUR made me swoon. Finally worked up the nerve to lose the training wheels and try just arch, got tired of the immense chore that it became and found EndeavourOS.
I cannot recommend endeavour highly enough. It’s exactly what I always wanted and as long as they don’t completely shit the bed somehow I doubt I’ll ever leave. I can’t speak to your hardware concerns, as I went full team red with common hardware for my last few builds because I knew they would have linux on them. The arch wiki is great. The forum exists. They have a plasma version.
The only games I have been unable to play are those that have shitty anti cheat software and the occasional very recent release, but those usually get resolved in a hurry. Genuinely no complaints.
Anywhere from very important to not important at all, depending on your specific job.
There is some good news though, you’ve been lied to about sucking at math. Whether by yourself or other people I do not know, but the education research I have seen has been pretty clear that the main difference between people of normal intelligence who are ‘good at math’ and those ‘bad at math’ is how long they’re willing to work on a problem to ensure the correct answer before moving on.
I know ‘try harder’ sucks as an answer but it’s the best one I know of and at least in this case will actually make a difference.