Question Character can't jump

When my character moving to the wall, it can't jump.

I figured out its because of friction, but I'm not sure how to fix it. Friction is needed for my character to stay on sloped surfaces without sliding down, so I can't just set friction to default. I find two solutions, but they both have issues. The first is to create separate tile maps for slopes and flat surfaces, and set different PhysicsMaterials2D, the second is to use empty gameobjects with colliders instead of the tile collider.

 

I temporarily fixed it by setting the physics material to zero friction and moving the character transform up while jumping.

 

https://docs.unity3d.com/Manual/class-PhysicsMaterial2D.html