Few extensions use the main Library Application Support folder, so there is a good chance the only extra thing you added was Space Mouse support. You could use the Go to Folder… menu item on the Go menu, in Finder, and paste in this path:
/Library/Application Support
then duplicate the SketchUp 2022 folder, and rename it to be SketchUp 2023. You may be asked to enter your Mac password a couple of times.