Why can’t i laugh?

It’s weird. I feel like when im with other people I can’t let myself go and just laugh?? when im alone I laugh all the time. is something wrong with me? how can I stop this from happening? I have anxiety and im an introvert but i have people in my life im very comfortable around. my bf recently asked me if he makes me laugh enough and i said of course… in my head I thought I lowkey wish I could laugh more but I have deep insecurities that prevent it from happening. it’s really annoying. do I need therapy??