Why league is getting worse and worse

Coming from a player that's been here since early season 3 I have seen the game progress and change in so many ways. But never before have I been so annoyed at league of legends. May I first say that the promos this year were terrible .. I was having friends who were plat 5 going 6-4 and placed silver 1. Honestly it's bs... Last season I worked my ass off for gold 5. I had over 550 games played and I deserved it, got my ass set all the way back to silver 5. MY BIGGEST ISSUE has to be the champions of s6. I swear I have contemplated selling my lol account to my friend literally more than I'd like. Every champion is so annoying and broke and there are so many new items and buffs champions can literally 1 shot.. Just lost my promos because a garen could easily e-q you for 1400 health and 1 shot q a adc at half health when not even fed. There is always a fucking broken champion and there's so many rn. I'm tired of it I cannot take this game anymore and im honestly going to quit for a while. I wish they would have kept this game simple and not added a bunch of fcking bs.