How do I hide the fact that I dont have a social life or friends

>>17295009
>another problem is how do I avoid going out when people invite me.

Even if you're a homebody in general I can almost guarantee you are going to regret this. That's how I went through college - not accepting invitations because of a combination of being a homebody, shy, and not particularly liking some of the people inviting me, until I stopped getting invited at all.

Just be honest and out right.

People who make up dodgy excuses and bail on plans are not well liked.

I was in a similar situation, being a NEET and all, and told like 1/4 of my coworkers. They'll get over it.

As for declining invitations, I literally just say "Nah, I'm just gonna go home and watch a movie or something". I've made it clear that being around a bunch of people tires the hell out of me, and I'll really only hangout with like 3 or 4 people from work. And consider inviting them to do things as well; they won't invite you forever. Or at least accept an invitation every now and then.

>>17295009
It won't kill you to accept the occasional invitation to hang out with your coworkers. The worst that will happen is that you'll have a no-fun evening, but you might actually enjoy yourself, and meanwhile you'll be establishing yourself as an ordinary, if shy, member of the gang and not a weirdo.