FYI, I haven't posted in this thread, but I know what it is to be lonely.
It was actually starting to chat with people on the internet that helped me to break my isolation and start going to traditional mass. And it has been friends on the internet, (not from here, and not Catholics, alas) who helped me the most when I was in a very dark place.
It's a wonderful thing to feel accepted, but it's also an illusory thing, more often than not. It's possible to be a "lone wolf" - and to live like that. It's not easy. More and more today people are isolated and their friendships are often shallow and false.
The breakdown in community is part of that.
To overcome loneliness one must be patient and find the right environment. And then, be extremely cautious, so as not to allow bad people to abuse your confidence. Because every social circle that can alleviate loneliness is competitive to some degree. And the people at the center of those circles are often nasty and jealous of their position.