I have ADHD, My mind is in constant erratic state, its a condition in som retrospect even a limitation i have to deal with, But I found i can still play game competently because I learned to balance my self.I know I can’t go by standard practices how to get better, some stuff you can get guidance and other you will have to simply do trial and error but you have to be in the mind set to believe you can be better. Heck not all fighter are created equal, so while i can be proficient in one doesn’t mean i can be proficient in another.
I highly suggest stepping away from games that frustrates you and play one more to your speed. I had to step away from majority 3d fighters because they demand you memories obtuse amount of tool set while micro managing its mechanics and match ups. That was over whelming, Its not that I couldn’t learned, i could if fully dedicated to it but once i felt uncomfortable and overwhelmed I just stopped. I did’nt have to deal with this in other games and I enjoyed it, but fighter like tekken, Soul calibure, DoA and gundam vs I felt I had no control over my action and was not about to relearn basic because how these game handle control and inputs. granted That doesn’t make these game bad and i can admire people who can do it but Its simply not for me.
If i wasn’t enjoying it then why bother? it but I know i still like playing fighter and just made sure I play fighter where thier more uniform system at works say anime fighter where most Combos chains, rules of engagement are simple and only deviating from the norm subtly ( arcana homing, assisst system, burst, reverse beat, ect)
What probably help me was that my first Competitive fighter was Last blade 2, its a slower pace fighter and most action come with high risk and high reward with the main thing needed to be efficient is spacing and reaction. Once I got comfortable and competent in that i explore other game notice the difference in their meta and develop upon them.
IF concentration is one of your problem then you should probably play fighter were your not doing so much and can focus on something.
Super turbo like game would be ideal for this, by that game where footsie usually dominates and every action comes with level risk and reward system that does;nt over shadow strategy of aspect.,
You have Karnove Revenge, Breakers Revenge, Shin Kohime , Samurai Showdown 2, SF alpha 2, SFHD remix, Pocket fighters, Akasukiblitzkampf, Real bout FF2, Aqua pazaa, last blade 2, Battle fantasia.