How to make a slide/snowboarding/snake system?

I wanted to make a sliding system, so that the player get rotated torwards down, I’ve managed to make the mesh rotate the X and Y to be at the right angle of the plane, but I don’t know how to make the Z face the lower part of the hill.

same task, Any success?

Help me understand, you’re trying to adjust the character’s “pitch?” So that his forward vector is parallel with the surface that he’s standing on?