There is a zone where not much of importance or power happens.
Bethsaida was the hometown of Philip, Peter, and Andrew. In Matthew 11, Jesus warned it of judgement for its lack of faith. In Mark 11, when He encountered a blind man there, He took Him out of town in order to heal him. The stronghold of doubt there was too great to do righteous spiritual work in. See Mark 6:5, where Mark said that Jesus couldn’t do many mighty works in His hometown, because of their unbelief.
If you want a miracle, don’t even tell people who don’t believe. Tell people who will pray for one. Get out of the Unbelief Zone. Find the Faith Zone when you need miracles.