How to fix player bumping into the wall?

Hello, this weekend i participated in the GMTK Game Jam 2021 and got at weird "bug" i would like to have fixed in future projects. When the wall is for example to the right and the player goes to the right until they´re stopped by the wall, the player bumps kinda into the wall and there´s a weird screen shake because of the cinemachine camera that follows the player. You can play the game and see the issue by yourself here: https://bubble11.itch.io/square-pair