Plat Support or Mid looking for Ranked 5's/Premade teambuilder

Hello. Bufforz here. I'm plat 5 atm(peaked at Plat 2), looking to play a bunch of consecutive games tonight for some practice. I always prefer ranked 5's because i enjoy that type of setting, but i am alright with playing 5 man teambuilder as well. I am very comfortable on either Mid/Support so i can pull my weight.

I'm down for 4-5 hours straight so lets grind and have fun! I have plenty of voice chat programs, prefer something easy to use such as curse voice/raidcall but i dont mind anything