I had it happen sometimes when my MacBook turns black and I used to close it for a few minutes and it was good to go, 4 days ago I was using my Mac again and it went completely black again and I closed it for a few minutes, but when I checked it was still black screen and Mac was unresponsive plus the touchpad didn’t work at all, it’s be 4 days and it doesn’t turn on, the only thing that happens when I click on power button it shows the apple logo and underneath “keep holding for startup and some shit” and immediately turns off and if you repeatedly click the power button it says “voiceover off” and again nothing, I’m planning on taking it to a technician but still a help/opinion wouldn’t hurt I’m literally so devastated I don’t wanna lose my MacBook 😭😭😭
Try starting up in Recovery mode or Internet Recovery mode. If it starts then run Disk Utility to see if it finds and repairs errors. Then try starting up normally again.