Can't find my old projects after updating to 17

Had 16.2.2 before, had issues with audio output switching to other devices randomly so decided to update.
After I update, I find that my local database has no projects. I have not upgraded the database yet.
Should I upgrade to get beck my projects? If not, is there a way to get them back?
After I update, I find that my local database has no projects. I have not upgraded the database yet.
Should I upgrade to get beck my projects? If not, is there a way to get them back?