Everytime I try to change my SketchUp shortcuts in preferences my SketchUp crashes, I have tried this on different computers on different users and it always happens. I redownloaded 2021 and changing my shortcuts was not an issue.
There is a problem we know about, where if you change the default shortcuts to something that is different (like say changing Move from M to W), SketchUp can get locked up.
You could directly edit the settings file while SketchUp is closed. Open these two files in TextEdit:
~/Library/Application Support/SketchUp 2021/SketchUp/SharedPreferences.json ~/Library/Application Support/SketchUp 2022/SketchUp/SharedPreferences.json
You can go to Finder, and choose Go to Folder… from the Go menu. Paste in one of those two lines, and you will be shown the file to edit.
With both files open in TextEdit, look at the 2021 file, for the section that includes Shortcuts. Staying with the example of changing Move from M to W, look for this line:
"Shortcut_15": "0 0 0 W selectMoveTool:",
Copy the part between the second quotes:
0 0 0 W selectMoveTool:
go to the 2022 file and find this:
"Shortcut_15": "0 0 0 M selectMoveTool:",
select this part:
0 0 0 M selectMoveTool:
and paste in whatever you copied from the 2021 file.
Some numbers I gave may be different for you, so don’t copy the whole line, only copy the part between the second quotes, and only do the tools that you have made your own customer key presses for.
After the changes, save the 2022 version of that file, and close the document. Open SketchUp 2022 and it should have the same shortcuts you had in 2021.