How to improve while playing against people a division above you?
So in the new flex q, I got placed in silver 5 from gold 5 after going 5-5. Recently, I have been placed against almost entirely platinum players in flex q, and was wondering how I can play against them well. I fully admit I am not that good of a player, but I am looking to improve, and want to know if there is anything I can learn specifically by playing against players at a division higher ranking than me.
-FYI: -I generally play mid lane now, and can stay even in cs for the first 10 minutes but then I usually get killed and then fall behind pretty bad