Join the rest of the world and have a good brood with the rest of society. Everyone is depressed, lonely, and poor.
I'm in the same situation and do not believe everyone is this way, my brother does everything i want to and i've been to the gym for months before to no avail, i send job apps to be unanswered and i hate my family explicitly but have no outside friends, i cant see the humour of the other 'upbeat' answers.. i dont know but maybe one day you or i can get into something with success like an activity or excel in the job and get on track for once.. even though im down, i look forward, thats all we can do.
i am poor too and was lonely. to lessen the impact of harshness due to poverty, i chose to write articles for a magazine. i am not lonely anymore. i involved myself in a cancer support group helping to give emotional support to the afflicted.
find something that can make you feel useful to the community despite being impoverished. it may help.
Meetup is a list of all the local groups and clubs in your area where you can go to meet people. Most are free.
Also, look in your local newspaper and see if there is a singles support group advertised, or do a google search for singles support group in your town. That will really help with the lonely and depressed part.
While you have the newspaper, look for free events like concerts in the park and so on. Get out and do something free like that.
The dating website is also a good idea, if you can go out once in a while.
As for the poor part, I don't know what kind of job you have, but see if you can find a better job that pays a little more money. it might be worth being even MORE poor for a few months to take a course at your community college and get some skills if you don't have any.
Get a cat.
They need love too.