A recent SharePoint Administrator who is no longer with my Company created a "Test" SharePoint Site with only himself having Full Control Permissions on the site, with everyone else having Read rights. We are currently trying to Delete this site, as well as many others that we are currently locked out of.
As a Full Control Admin / Collection Admin on the entirety of our SharePoint environment, how can I delete these un-needed sites?
*We are using SharePoint Online (I initially believed it was 2016)
Any assistance is greatly appreciated. Cheers!