not as fun anymore

i really like this game but as soon as i play i start changing my mind. i don't find it as fun anymore it's really unbalanced, seriously you can't say it's not. Ranked is just hell, i find myself in an endless cycle of win and then lose stuck at 50 points pretty much always. and if by some miracle i make it to promos i lose them. There's more than 100 champs in this game and you will always see the same 20 every game . people just pick what is op to win, they can't even play a champion they may consider fun anymore cuz they won't stand a chance . this has even leaked into normals people just picking what wins. . i have been playing overwatch (ps4) (add me maybe?)really fun, sure there is some crap op characters in game but at least you can always find way of stopping them, were as here it's pretty much gg. every champion should be able to play that way too. i don't know maybe someone can give me very useful tips for playing cause seriously i feel like quiting but then i don't want too.