I understand. Meditation is kind of a wierd pursuit with a lot of technical aspects to it... and it is only sort of related to getting out of depression and social isolation. Although there is a lot of hype about meditation -- an I'm a big fan obviously -- sometimes people talk about it like it cures everything you want it to, but that's not quite right. That's sort of like all those people saying that yoga or nutrition or a positive mental attitude or religion or politics or exercise or (insert anything here) is a magic cure that will fix all of our problems. Sure, good stuff is good stuff, but one thing doesn't fix everything.
That's why some meditation websites have information on basic health and mental well being, like this:
https://www.reddit.com/r/streamentry/wiki/health-and-balanceThat said, there are books like
https://www.10percenthappier.com/ and others that talk about how meditation can help. Maybe other folks will have suggestions, too.
My own view is it's much better to deal directly with depression and isolation rather than hope that mediation will fix it. Meditation is great for looking at the mind and see all the ways we make things worse for ourselves. Sometimes it isn't obvious that we worry too much or second-guess ourselves too much. It can be bizarre to look at our mind and realize how our attitude can be like driving with the parking break on. This can help us realize we want to change things, incluing learning to be easier an kind to our self.
Changing things like depression and loneliness takes more than just realizing it's going on... it takes doing something. And this is the weak link of a meditation-only approach. The thing that seems to help depression is decreasing the amount of time worrying and doing more little activities, to get the body and mind doing things and less focussed on itself. It is similar to lonliness. What seems to help is decreasing the amount of time worrying and doing more things around people. Little by little, doing some things that seem uncomfortable. Unfortunately, some people think that if you do enough meditation then everything will become comfortable. I personally never experienced that. It's always challenging to do new things. I think meditation helps a little, but we still need to be brave in the middle of feeling some discomfort and attempt to make changes...
Obviously everyone is different and how this change happens will be different for everyone. Some people can just jump in and start making little changes. Some people will use access to health care and can have doctors and therapists help them, then they can also use them to help figure out better nutrition, medication, and therapy techniques to help make change happen. Some people will use exercise. Etc etc. Depression can be challenging, which is why there are professionals who devote their professional life for helping people deal with it. People who have a therapist AND have a meditation practice seem to make the fastest progress, I've noticed.
So anyway, I'm probably not saying anything new to you. There is a whole universe of advice about depression and loniness out there, way beyond meditation's little piece. I hope that you figure out how you want to start making little changes in your life. This chat board is good for meditation related questions, but my impression is that a message forum can't really do detailed depression guidance -- that is the realm of professionals.
Hope this helps in some way. I hope you keep searching for your path. Life is always a little challenging, but things get better if we keep working, little by little, toward what we want. Best wishes!