You can check your drive by carefully following the procedure here:
Do not do the destructive read-write test. It'll wipe your Zorin install. Do the non-destructive read-write test.
By doing the non-destructive read-write test, you force the drive to remap any bad sectors it finds (sectors it tries and fails to write to).
You can list your snap packages via:
sudo snap list
After you've found the .deb version of a package, you can uninstall the snap version of that package via:
sudo snap remove {packagename}
So, for instance:
sudo snap remove gimp