Why as a Silver player i get matched against diamonds.

I mean really i am silver. I get it they use a mmr system (Its broken i think?). But really! I play the a few matches have a winning spree in flex now all of the sudden in normal games I can't even play against someone that is just a bit higher than me. They always have to be like diamond 4 or plat 1. Really! I get stomped by these people it makes me think why do they get matched with me. How can a silver (normal game) mmr meet the mmr of a diamond! This does not make sense in anyway. Why can't they put me against gold players or something something i can handle. Because the matches i am winning is close matches against other silvers. Now they put me against diamonds while the highest rank in my game is Silver.

I am really considering to stop playing this game since its not fun anymore and the meta is chaos despite them saying in their "Riot Please" video, "They like this stable meta" I mean what the @#$! Supports doing the most damage come on. [slayer-jinx-unamused]