First and foremost if you value this data you make backups. Data you do not have at least two copies of [on separate media] is data you do not care about and you should expect to lose said data.
Next if you are worried about the drive, simply scan the drive with the drive mfg's diagnostic.
Here is a link to the seagate support page for external drives;
https://www.seagate.com/support/kb/seagate-usb-external-drive-diagnostics-006153en/