There are good points made by @Nicky-McCurdy, I personally have found that for Private repositories using develop as the default branch is a cleaner flow for the engineers.

Pull Requests then default to develop and engineers know to start any new code from that branch. Then master is then reserved for code that is in production.

Good branch protection rules can still be setup for master and a HotFix can be pointed there to skip bringing any develop code in.