apex legends works.
the finals does not, because of their anti-cheat solution.
for multi-player fps games remember that you'll play against pc players, they'll have keyboard and mouse and you won't have assistance features you might be used to from console fps. Experiment with gyro controls, the touchpads and/or "flick stick" you'll might find a way to get similar speed and accuracy as a mouse user, but i'd guess you are in for an uphill battle.
have a look at the control schemes provided by the community for games, if you don't like the default controls.
my competitive fps days are in the past, but i can recommend some single player fps i enjoyed on the deck:
Doom (2016)
Black Mesa, the half-life 1 remake.
Amid Evil
Boltgun
Borderlands 2
e:
www.protondb.com to check how various games work on the deck. some games are not "verified" by valve because they only show xbox button prompts, or some "unplayable" games run perfectly fine with a specific launch options
it's intrusive anti-cheat-software operating on a system level where it could be a viable attack vector. thats what sucks.
what also sucks: this will make one of the most played games in existence unplayable on linux.
and only so riot looks like taking a problem serious, that is probably much smaller than people think.
other than that:
mobas absolutely require mechanical skills, that cheats could assist you with. there impact might not be as obvious as an incredible high hesdshot rate, but being able to consistently last hit creeps will give an ever increasing advantage over your opponent, canceling certain animations will increase the damge you are able to dish out over a given time frame and seeing the trajectory projectiles will follow makes them easier to dodge.
hell just supplying more information than the standard ui can be a huge advantage: knowing what your opponets buy, or invest there leve ups in all the time, displaying their cooldowns and stuff like that.
Sei nicht enttäuscht, wenn die Medikamente nur die ersten Tage euphorisierend wirken, das ist normal, der wichtige Effekt ist dich auf Sachen konzentrieren zu können, auf die man sich grade konzentrieren will.
ansonsten: Verhaltenstherapie oder ähnliches kann auch ne große hilfe sein, Leute mit lange undiagnostizierten adhs haben oft Strategien und Verhaltensweisen entwickelt, die langfristig mehr Probleme schaffen. Und sachen wie Problemen bei der Impulskontrolle und sowas gehören auch oft zum Paket.
if you want to dive deeper into web development. they also have introductory stuff, but cant really vouch for that, only found it after allready working for some time.