Is it normal to not like people?
Yes, it’s normal to prefer your own company or find socializing draining. If you mean you feel intense dislike toward nearly everyone, that may be worth exploring—but it doesn’t make you a bad person.
Lots of people would rather have a few close connections—or no plans at all—than spend time around people just for the sake of it. You can be kind and still find people tiring, annoying, or not especially interesting to be around.
It depends a bit on what “not like people” means. Preferring solitude is one thing; feeling angry, mistrustful, or miserable around nearly everyone is another. Stress, disappointment, or a rough stretch can make people feel especially hard to tolerate, and you’re allowed to set boundaries while you figure out what’s behind it.