Is it normal to want to be alone all the time?
Depends.It depends
Yes, some people genuinely prefer a lot of time alone and find it peaceful or recharging. It’s worth paying attention if you don’t actually want to be isolated, or if being alone is getting in the way of things you care about.
Some people are happiest with plenty of solo time; you don’t have to be super social to be doing fine. Wanting quiet, space, and control over your own plans is a pretty ordinary preference.
The key difference is whether being alone feels good or feels like something you can’t escape. If you’re withdrawing because you feel low, anxious, lonely, or have lost interest in people and things you used to enjoy, it may help to talk it through with someone you trust or a mental health professional.