league is a shit game with this community

so I started playing league of legends 1-2 months ago , not sure, and now I'm in bronze 3 and was in promotion to bronze 2 , I got an auto win idk maybe from system , and I played (1) ranked game and lost cause ashe was trolling in bot lane and flaming me for w/e reason , so after the game ended and we lost, it said " series completed" ...... eh wtf? I lost 1 game..... I check other guys who had the same problem and some said maybe I dodged a champion selection , ok wtf now? for real , I dodged a champ select , cause a fucking kid got support and went lee with smite , and another top laner wanna go bot lane , so basicly I didn't want to play with these guys , cause they obviously look like flamers and trollers and I cant play with those, so I didn't select my champ and I didn't know about the thing that if I dodge I will reviece a lose on my promos................................. stupid system. maybe I'm not a prof in league , but I consider myself as a decent player. another thing is the client , it DCs while its loading , or just froze there and shows all 100% , I wait maybe 4mins or something and then I decide to go dashboard and then reopen the game, but it said some thing like " client disconnected problem with HTPT or w/e shit idk" so I sometimes reviece ask buster , or sometimes I get lose , cause they made a "remake" . and how the fk I can repair this? and whats my fault on this? another fucking tilting thing , the trollers and AFKers on the game, how can I win games while this happen ? how can I leave bronze? especially when I don't have friends on the game, so I always solo Q or with a friend I have , so I have 3 strangers playing with me. done ranting, game is fun when you play with friendly players idc if I lose or win , its the same for me , cause we all make mistakes , we all humans that's why , and with 1 mistake we might lose the whole game . thanks