DEAR RIOT.. IM MADs Promote/Demote and Ranking system

First off I'm silver 4.. my skill level is silver 3 but I cant get a good enough team to win 70% of the time regardless.. My Complaint.. I understand a loss is a loss but it should not count against u if u were autofilled into a position or if u had a positive game performance.. .. its a handicap for u and ur team I understand its difficult to find support.. because the bot dynamic is gross.. support job is basically to be a walkin shield.. end up under level barely engage in team fights and just run away because alone.. ur a waste of a champ.. excluding OP lux, sona, leona, and maybe blitz.. (fr though a lux stun auto and ult can kill an ekko full build) (fix it pls shes nasty) I main mid I do some jg and a bit of top lane.. I dislike that u always autofill in ranked wat is the point of that.. I don't kno how the matchmaking goes but I feel like when I'm rank 1 in bronze 1 I shouldn't have #s 38 26 and 19 on my team its unfair..Id love to discuss that..i mean ill go 13-4-12 my bot will feed and ill lose.. I get deomtoed because game after game theres an afk someone tilt or rages and quits some people really just throw.. that's bronze life at least in silver no one afks but u still put bronze players in silver games like y.. not on our lvl being baqk in bronze is so frustrating because I dnt use hyper carry champs I use real play champs so when I carry as ekko but my bot lane is bronze and feeds.. i feel like I'm teaching them while i play like cmon man. I do well but lose and get demoted.. that's dumb.. there needs to be a point system (good one) and someone to monitor the demotions because its really unfair.. I'm not the nicest to bad teammates ok I can deal.. but we are playing ranked and if u dnt kno wat ur doing.. y r u in a ranked game with me.. someone who wants to play competitively.. its a giant wall that skill cant jump over.. Tired of hearing y don't u learn a new role.. if i dnt like the unhealthy bot lane y am i forced to play there.. I'm very upset and honestly this makes the game so much less enjoyable.. I joined round season 6.17 like a month before ekko dropped if i remember and through a lot of changes i remained but really this ranked foolishness has got to stop.. I want a reply from Riot I want an explination and I want u to fix it.. Idc bout worlds and all the other bs.. make the game fun again.. I own skins icons and all that i bought.. i enjoy this game and its on computer i dnt even like computer games.. Pls man i kno u cant fix my rank but at least fix who u team me with.. sincerely AyoLiko420 Ekko, eve, Diana, tali, kindred, and mumu main