ok whats with 3 v 3

ive asked so many people and there like i will not play a 3 v 3 ranked im like but ther is only 3 of us so what im asking is in ranked for duo choise alow for parties of 3 and 4 pls if you invite 5 make it a team pls so that way we can still play pls riot ty it could also balance teams if you use the knowledge of the players