25, never worked, feel lost and unmotivated. What can I do?

I recently saw a post on this subreddit about a 45 year old who has never worked, and it made me write my own post because I think there's a good chance I'll end up like that too.

So I am 25 years old and I have never worked before. I graduated high school in 2017 and I've done nothing with my life since then, just living with my mom. No college or anything like that.

I've never really felt motivated by anything to try and do more than the bare minimum. At school I never did extracurriculars or sports, and none of my classes really interested me so I did just enough to pass them.

I tried to talk to other kids and I feel like I made a genuine effort to know them but I've never been able to get past acquaintances and make actual friends. I've never had friends really, never hung out with anyone after school etc, and I've been more or less isolated from everything since 2017. I told myself I needed a year to kind of calm down from how depressing and overwhelming high school felt, but 1 year turned to 2 then 3 and now we're here.

I live with my mom and I know this can't go on forever but I just try to find the reasons to work or do anything. I'm not interested in the things most people seem to be, like family or careers or cars or traveling etc. I am more or less content with gaming and watching shows and reading/writing. And while I enjoy those things, I don't know if I'd work to sustain a life consisting only of those.

But at the same time I know I'll have to do something eventually and sooner rather than later, but the lack of motivation is seriously holding me back.