Yes, you could.
But if the goal is to start over with a blank slate, why not just create a new blank sheet in your current (Google) account and point Glide at that?
Getting back to your original problem, I’d suspect it was probably a case of missing or incorrectly applied visibility/filtering settings, or similar. If you were okay to share your app, then myself (or somebody else) could take a look and help you get it sorted. (But not right now, as Glide is in the middle of a major outage)