Why isn't the Pixel 4 XL switching on?

After a very light fall on the carpet, clicked the power button to continue what I was doing….. Then nothing! Just a black screen.

Kept my finger on the power button, then saw the Google logo on the screen and as soon as I removed my finger, black screen again!

Tried going to safe mode, the menu appeared, and again as soon as I removed my finger from the power button, went back to a black screen again.

I don't understand why? Could it be related to the battery connector?