Good on you to abandon
Was not ideal to main some one you cant break 50% WR on and im glad you realized that finally.
Try to remain calm if you flop a promo.
If riot wanted to specifically keep you down they could just make your account only gain 1-2 MMR a game and your fucked completely. Or they could just ban ya. Just saying its pretty arrogantly to think your some one they would specifically target plus if they wanted to fk you over they have far better tools then player distribution.
But hey, Stay calm. Keep your play consistent. Climb to Gold. You can do it, you been close a good # of times. (also... schools back in session. Keep that in mind and avoid the time your gonna have to deal with high schoolers. Biased view but lets be real no one expects much maturity from 11-15 year olds. Just saying your time line here overlaps directly with summer break.)