How to distribute Android device for my customers so they don't need to create Google accounts?

I'm seeking a solution for the distribution of my Android-based devices (tablets) to end-users. I have a tablet with a custom Android 11 OS, and I've developed an application that is publicly available on the Google Play store. In the future, I plan to sell these tablets to my customers. The challenge I'm facing is that I'd like to avoid a situation in which **they** need to create individual Google accounts (some of them might not have their own Google account or might not be technically capable of creating one). I haven't found a feasible solution to this issue yet. I considered using something like 'zero-touch enrollment,' but if I understand it correctly, it's more geared towards IT administration, and I would need to have an authorized manufacturer that supports this feature. Another solution I'm contemplating (not sure if it exists, though) is customizing the OS in a way that it automatically starts my application on startup. However, I'm uncertain if I would need my own CDN for software updates, etc. I'm not sure if such a thing is even possible. Do you have any ideas?