How to hang clothing rod in a wooden closet

Hi all, so the place I’m staying at has a closet, but the inside is entirely made of raw wood. I taped the insides with wrapping paper as a makeshift wallpaper and got a clothing rod to hang my clothes. The problem is the rod keeps falling no matter how tight I extend it. I don’t even hang most of my clothes, just my jacket and light wear. Recently I bought a rod holder (?) thing from daiso, and it comes with a silicone backing piece to paste on surfaces. But even pasting it on the wrapping paper makes the rod fall and tear the wrapping paper. I don’t think I’m allowed to stick it on raw wood(I live in a dorm) and even the instruction says that, and I’m so tired of having to hang it back up again. Because then I have to paste the wrapping paper all over again, and it’s a pain in the ass. So please, any advice or things I can buy to solve this issue? Thanks!

by fishwrlds