Please help me

I have played this game for almost 6 years. My highest ranked account was Gold 1. The way I played in ranked with gold and plat players was as follows. I would anticipate my opponent, always follow up my teammates engage, respond to pings, and would always assume my teammate would follow up my engage. I easily climbed from silver 5 to gold 1 within 3-4 months playing only a few games a day. On this alt account, I am Bronze 1. Absolutely at no point in time EVER has a teammate followed up an engage. They watch me die , and call me bad , using their score of less deaths as justification they are better than me. How do they not understand that had they engaged, I would have followed up and we would have won the fight or team fight? Or if they engaged and I ran away and did nothing like they did, they would have died and been the "bad one". These people don't even understand basic concepts of this game.