Really dislike Leagues ranked system

The ranked system in league is fucking broken. This hidden mmr and lp bullshit makes climbing out of anywhere boring and not fun at all. I get it, im pretty trash. But pretty frequently I get into games where I do great but the rest of my team doesn't and those games are insanely difficult to come back from. Or i get 3 afkers in a row. Im losing 20-22 lp and im ganing like 15-17. Then I make it all the way to promos on a nice winstreak, then suddenly Rito pairs me with some of the worst players in the game that dont even deserve Iron 4. And then when you lose promos it takes me all the way down to 60 lp. Like what, 40 lp loss from that? I think Leagues ranked system should be more like overwatch, where there arent these "promo" bullshit. You just have a number and that determines your rank. So much better than the lp and promo system. And again, I know I'm just bad at the game but im tired of losing 40 lp every time I lose a series. And then gaining little to no lp from a win.