How do I figure out how many hours should I be sleeping every night?

Vlad F.
Start going to sleep at the same time every night and try 6-7-8 hours. Write down how you feel during each day and then decide
Canto Q.
I have read that an adult should have between six to eight hours of sleep, and I noticed that when I have lass than seven hours of sleep I can’t get through the day without a nap after lunch or without coffee after lunch