[QUESTION] Why can’t I play Infront of people

I’ve been playing for about a year and a half now, I’ve never had lessons or had any help from anyone apart from the odd YouTube video so I’m very much trying to teach myself. So my problem is that I can’t play guitar infront of people, I can play with headphones on perfectly fine but when it comes to other people listening my hands get all shakey and sweaty and I forget the notes and everything even if it’s just my parents in the next room. I don’t really get it because I did the exact same with teaching myself how to play the piano and I usually have no problems playing for other people. Sorry about the slight rant I was just wondering if anyone else had the same issue and managed to get over it. Cheers 🙂