By default, you own any file you create or upload to Google My Drive.
This post fromMiniTooltells you how to do that.
By default, you are the owner of every document you create, sync, or upload.

Step 2: Next, go to the file you want to transfer ownership of.
Then, right-click it and then select theShare option.
Simply punch in their email address into theAdd People And Groupstext box.
you might accept or decline the invitation.
you could also search in Drive for files pending a response to an ownership transfer request.
Step 2: In the search bar at the top, enterpending owner:me.
Step 3: Right-hit the file or files you want to respond to.
Step 4: tap the Share people icon and theAccept ownership?option will appear.
Then, you could chooseAcceptorDecline.