ranked climb ruined by a 4 stack, every single time

tried to grind rivals ranked in solo queue this week and im convinced its built to make you suffer. my aim was on, i was hitting my flicks, going positive in raw gunfights every round. doesnt matter. every other lobby is a 4 stack that all push you at once, and theres no way to 1v4 when they pincer you from three angles and one of them is a laggy mobile player teleporting around with aim assist locked onto my head. i dont lose the gunfights. i lose the 1v3s the game hands the other team because it refuses to separate premades from solos. had one match where i went top frag by a mile and still lost because my randoms went afk and the enemy stack just farmed them the whole game. thats not a skill issue, thats matchmaking failing me. if they ever add a solo and duo only queue this game goes from a 4 to a 5. until then im hardstuck because of teamers and lag, not aim. same story every season and im tired of it.