Proper fitting of my new grizl

Hey guys. I recently bought a new Grizl 8 1by and this is my first time riding a bike with no flat bars, so it feels a bit uncomfortable hah, but now I feel worried that the bike is not good size for me (the bike is L and my height is 189 and inseam is 82, for which Canyon reccomends L)

A friend of mine filmed us cycling, so if anyone has time to check if the bike might be too small for me I’d be very grateful. (I’m the one on the mustard coloured canyon hah)

I kindof feel stretched when holding the risers, and it does not feel more comfortable compared to holding drops. At the end of the ride I had some upper back pain, but it was not pain that persisted, so my guess is its just my body getting used to the riding position, and me not stretching properly

I rlly like the bike, but if I am not comfortable after 60km how will I cycle multi day bike trips :/

Or maybe I just need to get used to the new position?

by Jaxxxa31