Is it normal to never have voice cracks?
Yep.Totally normal
Yes. Plenty of people rarely or never have noticeable voice cracks, even during puberty.
Voice cracks happen when your voice is changing and your vocal cords are adjusting, but they’re not a required part of puberty. Some people have lots of obvious cracks; others have a gradual change or barely notice one at all.
If your voice otherwise feels and sounds normal to you, never having voice cracks is nothing to worry about. Bodies don’t all follow the same soundtrack.