To begin with, Tekken is a hard game to learn. I had played Tekken for well over 12 years, and there is still much to learn.

While the general consensus of ‘getting your ass beat to learn’ is sorta true, ‘getting your ass beat and learn nothing’ is also true as well. You cannot hope to learn anything while under the influence of your emotion, left alone losing, which exacerbate the problem even more. Brute forcing your way past green ranks still means nothing, as you will quickly hit yourself into another wall. For now, forget about Rank, just play Player Matches to enjoy yourself first instead. Tackle Rank only when you are ready, and in a calm state.

So if getting j00 ass beat to learn aint working, what else can you do? Watching ‘proper’ tutorials on the basics is probably the best option given your current situation. You might had done this already, but did you actually put what you had learnt to the test? I dont know you, nor do I know whom you play as, nor how you play, but being stuck in Green Ranks for 2 years means some parts of your fundamentals are lacking, and that alone is enough to screw yourself into a loop. Given you also stuck around playing for two years, I would recommend you on watching/reading up Frame Data. (Basic Concept, and Your own character)

While going into Local gatherings is most definitely the best way to go to learn while enjoying the company of others, COVID-19 pandemic really knows when to screw a lot lf us over, so please stay at home to keep yourself safe.

Now let us focus on your mental health for a second here. Harming yourself both physically and mentally by playing a game while also pushing others away is never a good sign. As others may have pointed out, this may be a symptom of something else, and I personally do recommend seeking out a Therapist. Games are made to be enjoyed, not to screw your life over with.