Facing the same problem 2 days back. As i came to know most of the time this problem happens because of hardware problems like your battery issue or because of water damage. In my case i was facing the similar problem in my samsung s21 smartphone and i was in a bad mood. I searched a lot and found a solution [link|https://okadtech.com/samsung-s21-black-screen-but-vibrates-problem-solution/|https://okadtech.com/samsung-s21-black-screen-but-vibrates-problem-solution/|new_window=true]
In my case i was lucky it was a software crash and i successfully solved this problem.