why silver players should play with bronze division players?

riot i try to climp elo but some boobs who are bronze have too bad scores and they lose their lane and u cant do nothing. Thats why i lose my 60% games .pls do something for that. my opinion is bronze players should play alone i mean only bronze players in ranked games . silver players should be able to play with gold . and gold with platinum and diamond .master and challngers should play together. in addition when someone reaches lvl 30 should be placed in bronze 5 and if he is pro he will climp up if he sucks he will stay in bronze 5... when a new season start and we have to play our placement we should just placed on tier less than the tier i was before f.e im gold 4 when new season starts i go silver 4 too easy. thanks riot if u are seeing this and i hope u will do something for that because i cant play with those players who dont know what is happening or they feed , they buy wrong items or do something that will make my game lost and destroyed..... thank you forr your attention [slayer-pantheon-thumbs]