Can I pray for someone I don't know?

There's a singer I like, or liked, who made a song with a term that is used to reject Christianity. I think this singer doesn't believe in God, and I'm afraid he's already done something wrong, like making pacts... And I liked him and some of his songs. But now I don't know...

Can I pray for him to repent? Can I pray for him to turn to God? I'm afraid I'm being fake, because I'll kind of be praying for him to know God just so I can like him... But because I have a certain regard for him is the reason I pray, right? I don't know…

Can anyone tell me any tips please, I have questions!!