Is there a way for me to check and see who last edited a sheet? Or the last several changes?
Based on the account associated with your email address, it looks like you are on a Business plan. This means that you have access to an Activity Log for the sheet.
You can read more about this feature in our Help Center, here: https://help.smartsheet.com/articles/2476206-track-sheet-changes-with-activity-log
Let me know if you have any questions about this!