I love League of Legends and I'm thinking about quiting.

SO, this is going to be a player feedback, if you're going to tell me "git gud lol" do it :

I'm playing League for 2 years, kinda just doing my day's victory with normals i'm not playing alot. I created a smurf to observe that I have the same issue : Every game I start I have no impact what so ever, 100% of them consist in stomps, I just win or loose my input doesn't matter. I'm teamed with diamonds players that just crushes my team or the team i'm against every time, For 1 years of playing in these condition I just forced myself to keep playing that it will make me a better player and stuff but guess what ?

It doesn't, i'm just not having fun playing anymore. And that's a game design flaw. Do I need to play with stakes (soloQ) to play a challenging game ?

Imagine playing Magic: The gathering, if you're playing "for fun" you're 100% of the time put with someone who will beat you anyway. If you want to play a challenging game you're forced to bet cards. That's basically what i'm doing playing League of legend.

I know someone will tell me that MMR in normals are separated and BLABLABLA and I don't care simply because When i'm playing "normal" games on others mobas, this doesn't happen. This is just an excuse for as I said a game design flaw that I never encountered on others mobas, I'm always playing with people of more or less my level. The fact is** I like League** and not these mobas in every others side, but now I just feel like a masochist.

You guys input will be really appreciated