It’s a popular stance, he can start a GoFundMe and not have to worry about money for a while.

Didn’t they already try this and lose?

There actually is a lot stopping that. Are there federal troops in LA and Chicago right now? And why or why not?

States run their own elections. “Cancelling the election” is not a thing that ever could or would happen. Nor is a new constitution, as that would require 34 states to even call a convention and then 38 states to ratify one.