I'm just a noob unranked aka silver, but this seoson i noticed that i'm not playing anymore whit silver in blind pick. I usually get team whit diamonds, plats and golds. And i can say that my skills ain't near to their skill level. I bet there is enought silvers players to play whit, so why i can't get games whit my skill level.
Honestly, I would love to be in your situation for the learning experience. I would be forced to learn numerous things just to not be the feeder of the team which would hasten my improvement at this game. If rito allows, please swap our situations. >.>
Ranked mmr is separate from normals mmr.
One side effect of this is that relatively high ranked players who don't play normals very often can have relatively low normals mmr compared to their ranked ones. What's more, people often screw around much more often in normals, so sometimes while they might be plat ranked, when they're screwing around in normals on a champ/role they don't normally play, they might actually be playing at 'only' a silver level.
On the other hand, those who play a lot of normals, and especially those who play their main champs in normals, can get relatively high normals mmr.
Those two factors, combined with the lack of limitations on who can queue with who in normals, can some times lead to some spicy matchmaking.
I'd embrace it as an opportunity to potentially learn some tricks from the shiny people, or even just ignore their ranks and play normally since they're probably not that much better than you if you don't pysch yourself out first, especially if they're not tryharding.
tip for you: go full time back-line support. That way, you wont be responsible for screwing up plays, you shouldnt feed too much... and you'll be able to actually watch and LEARN. after a month or two of that, your game should be considerably improved by the practice. WIsh I were in your shoes. I USED TO BE.. but then they "fixed" flexqueue matching. Ugh.
Normal matches do not share MMR (matchmaking rating) with Ranked, so if a player spends much less time in one than the other or just performs differently they can have a drastically different MMR between them.
Because these diamonds plats and golds you spoke of are actually boosted silvers >_+
