How do I make a structure with randomly generated rooms using structure blocks?

I want to make a Backrooms mod where if you noclip, you spawn in an infinite labyrinth that stretches on for miles. In order to do this, however, I need to create a structure with randomly generated rooms. Unfortunately, I do not know how.

If anyone is able to help, could you please tell me how to make a structure with randomly generated rooms using structure blocks? Thank you.