hows does this happen?

i have been playing ranked games this past week. but since i have been getting support EVERY TIME (aka 33 games in a row), so much so i felt i was getting rusty at my primary role i decided to play some unranked games taking support off as a role. while adding my primary role (jungle) and changing my secondary role from support (my 2nd best role) to mid (a role i need to improve at)

well the game placed me facing a team with FOUR of their players under lvl 30.

needless to say we destroyed them. and if this was a ranked game id say "cool free win"

but im trying to PRACTICE vs people my own skill level or higher. i hit level 30 in SEASON THREE. this is SEASON SIX.

how am i supposed to practice and improve when your putting me vs players who are worse than the intermediate bots.

the game literally got to the point where i was soo bored i just starting trying to tower dive and 1v5 to see how many of them i could kill b4 i died it was such a joke. (hence the deaths i got)

i know this is "unranked" but if your not goign to put vs vs other silver players, can u AT LEAST people me vs people who are lvl 30?