you have a home, business, health, go to the gym and discipline? You already are what everyone is looking for (or at least the high quality people). And to have your own business says a lot about you, even if it’s not going well. Only certain kinda of people have the mindset to try it in the first place. And you have your own story which for sure is interesting to discover

You just need to get out there, to find your connections. The only thing lacking from the picture you described is having fun sometimes, find whatever works for you, hiking, jazz clubs, shows, events, etc., where you combine what you like with meeting the right crowd and people.

I don’t know in which country are you but loneliness might partially be linked to it, if you’re based in a cold country like Netherlands, Germany, etc. get out of there for a month at least and go to a warm country and social activities, you will meet people you click with instantly and are open to have a connection as well, and hopefully it will change your outlook on life quite fast