MacBook Pro runs out of battery and feels warm when left unplugged and in sleep mode overnight

I have tried turning off Screen Time and it still drains all the way to 0%. Leaving it plugged in is not a solution -- That will still result in my computer consuming energy all night. I want to get to the root of the problem and figure out what is consuming so much energy. Should I be quitting all my apps before going into sleep mode? I thought the point of sleep mode is that it pauses all processes running. Or should I just be shutting off my computer instead of leaving it in sleep mode?