Like I said I got the song while scrolling down shorts, although it sounded nice immediately I felt something was off. I decided to go into their channel all of their stuff was uploaded 2 days ago at the time. I listened to another song of theirs and both songs had the same artifacting whenever he would sing louder/with higher pitch. It's also consistent with other AI audios that do this.
I asked about it in the comments but he said that he did everything himself but I wasn't really convinced. So I decided to put it here. I downloaded it as a video so it wouldn't impact his channel right away, neither positively nor negatively.
If it's not AI I'll surely support the artist and delete my comment as I liked the song but I still couldn't get the feeling of it so I decided to ask for help.