lol ranked matchmaking (community & skill)

Ok so i have a complaint about the Lol ranked matchmaking. When u play ranked u of course want to get your ELO higher but beacause of a lot of things u cant rise ur ELO or u just have a hard time doing it. The community is one of those things, a LOT of players in ranked curse and blame otherss for their mistakes thinking they re good. IDK why but people think that if u curse at some1 hes gona do better. I serously dont get that , if some1 would call me a noob, idiot etc. i probably wouldnt wana play with him or play any better, this of course happens A LOT more offten in ranked then in normals. And they dont solve the problem with all aggreing how to play and go togeter in teamfights etc. they just curse and spam sur at 20 or /all my team sucks. Another thing is skill. A LOT of players in ranked just dont get it (they go alone push on bot or any other lane and get killed, not ward, chase a enemy for ever if they want the kill, and not cooporate in teamfights) And of corse these kinds of player ussualy blame others. And for the good players this is hell. All u want is to raise ur elo but u cant beacause ur team is holding u back. And i we seen a lot of players that are bronze/silver solo Q and are Chall/Diamond Ranked teams witch kinda proves it. I just think u should change matchmaking so players get matched with positive players. I know riot is working hard to make match a 50v50 but it just isnt right and when my team scres me i hate to rage but i do. So I thin u should make a system where negative players cant play ranked OR amke that each division only gets matched by player in the same division, ranked wins, honors etc. Hope u understand this post and like if u wana support or comment what u think about it.