Is there a way to only fight against other beginners?

Hey guys. Im one of those players who got into the game cause of arcane and im struggeling pretty hard rn. I played for about 2 weeks straight now and tried a lot of different champs and roles and im at the absolute bottom of the ranks in iron 4 with 0 lp and with about 1 kill in every 6 deaths. The thing that confuses me is that the people i get paired up with are so much more advanced than me, having these diamond thingys above their portrait and masteries in the 25-50 area. Is there some setting that i accidentally enabled that prevents me from going lower than iron 4? Normally you would think that if i play bad enough id eventually get paired with the people who attack towers without minions or need to go afk every 2 minutes to take care of their baby, but nope, experienced players only it is. I dont care how low my stats go, i just wanna fight fair enemies so that i can become better. How do i do that?