Calc spreadsheet crashes every time it’s opened since update to version 6.1 is there a fix for this or a way to go back to the previous version

Calc spreadsheet worked ok in previous version.

Please test resetting the user profile: Menu/Help/Restart in Safe Mode

How to reset the user profile is here.
First save the “old” user profile under a different name.
If you want to download an older version of LibreOffice, you can download it from the archive. If you still have problems, call your OS. Explain exactly what you are doing.