Math is simply a form of symbolic logic, not an underlying “fabric” of spacetime
Sick of the word “fabric” and the quantum woo used to make maths and the relationships between things sound like it’s the language of God. It isn’t, to me. It’s a way to communicate logical relationships.

But…
Good comment on this video “As a working mathematician, the scariest part of incompleteness is that when I can’t solve a problem, I don’t know if the problem I’m working on is just really hard… or if it’s actually impossible.”
Euclid introduced the axiomatic method still used in mathematics today, consisting of the definition, axiom, theorem, and proof. You may be confusing math with the relationships math describes.
I guess you got this from the video I am linking to.