Serious Matchmaking/Queue Issues - Unranked Versus Diamonds

Hello,

I am having some serious issues with the queue and matchmaking system, specifically the ranks I am being matched up with and against.

I am currently unranked (reached level 30 THIS season). However, I am constantly playing with high elo players, even when I play by myself or others who have not even yet reached level 30/are Bronze. For instance, I just finished a normal, unranked game with the following ranks (solo-queue):

My team: Support (me): Unranked Adc: Diamond IV Mid: Gold IV Top: Platinum I Jungle: Diamond IV

Opposite team: Support: Platinum III Adc: Gold V Mid: Diamond V Top: Diamond IV Jungle: Platinum III

**4 Diamonds, 3 Platinums, 2 Golds, and little ol' unranked me. **

I have not won a tremendous amount of games. I haven't played ranked yet so my MMR isn't an issue here, either (as far as I am aware). And yet, I keep on facing people wayyy out of my league, which completely ruins my fun and simply doesn't allow me to practice champions with people who are on my skill level. If this was happening just every once in a while, I wouldn't be concerned. However, game after game after game am I playing with high elo players, no matter whether I play by myself or duo with Bronze players or people who haven't even reached level 30 yet. In fact, when I play with others who haven't reached level 30 yet, I often have a team made up of unranked/low level players, yet I am facing Golds, Platinums, and Diamonds.

Why is this happening? How can I stop it/avoid it?

I would appreciate any insight or suggestions! Thank you :)