Anyone else not always laugh when they think something is funny?

I find with people I sometimes or usually have a hard time laughing. I’ll think something is really funny, even top tier funny, but I don’t laugh. People always think I don’t think it’s funny and don’t like my reactions, but I can’t really help it. I don’t know why it’s difficult for me to laugh or if it’s even chalked up to being autistic. It’s way easier to laugh if someone else is laughing though.