When I go to settings, there is no Storage! I have an st card from my previous Samsung Galaxy tab A 2015 whose battery will not hold a charge, so replaced. That I want to wipe and reformat for my new device. But Storage is not listed under Settings???
That did not work; however, your solution got me looking. There is a search icon, but no "More" menu. So I searched under Settings for storage. There is a Device Maintenance. Under that, a Storage - to clear ; BUT, on that page, there is, finally, Storage, but under the hamburger menu. Click on it, and now 4 or 5 levels deep, I can now format the sd card. Buried, it is,