I could not agree more to this.

Other than that, keep trying to do stuff with your time. Check out your local library for events, go an evening course that's at least mildly interesting or honestly, whatever sparks even the tiniest interest or curiosity. There are also sites like meetup.com

If this is too hard for you right now, or even if it isn't try and find reasons to speak to your neighbors or just strangers.

See someone with cool hair at the store? Tell them! "Excuse me, I just wanted to say I think your hair is really cool", or if you see a neighbor or some random person enjoying the weather, looking at a cool car or whatever, say something about it! "woah, lovely weather", "oh, nice cars here today eh?" or whatever.

It often feels weird and awkward, but sometimes people strike up with a small convo and you'll feel connection for a little bit. I used to hate these interactions but I've learned to like them, they are very low-pressure as there isn't anything to maintain.

Good luck and take care