It seems like the character gets stuck when touching the side wall. How can I resolve this issue?
Hi YCK1204,
Welcome to our community! 
Your thread is linked to the SnowBoarder project. See the tag. We don’t have any walls in that game, so I currently don’t know what I could suggest to help you with this problem.
Please share more information on what you did and have in Unity. Screenshots of what you have in your editor might also help.