How to win in SEA Solo Ranked Games?

Hi there fellow redditors,I need help and tips on how to win Solo Games..I'm mostly a party person and I've been playing in the same stacks for at least a decent amount of 1k+ games and I main mid.. I play so much that I raised my party mmr from 2.2k to 5.2k but I neglect my solo mmr which is stuck at 3.9k atm..I can't seem to raise nor go below 3.9k,I can't seem to communicate with my teammates,coordinate ganks and advice them,I'd be greeted with the usual "fuck you" whether it be in english or some other foreign language such as.."PUTANG INA MO" followed by mic spams and the classic dota 2 lineups..5 carries..since there's most likely to be 5 carries if i were to play mid..I mostly go support in solo games but I simply can't lead my crew of the ss dumbfuck..going questionable builds..fighting internally..throwing when there's a lead..I'm really at a lost..I feel so dissatisfied when I play solo,It doesn't make me feel like im having fun..only a spiteful feeling..