I'm having trouble finding the delete and back button

Same, can't change options or even enter a name.

tap the screen with two fingers at the same time instead

This is a problem that can happen with many apps and devices, and the solutions will vary. Usually it will have something to do with cutout settings or disabling full screen, but sometimes that doesn't work

Tapping the screen with two fingers at the same time works on most mobile rpg maker games, even if it's less convenient. This is also how you open the menu