You sound bloody amazing, OP, hats off.
Love your children. Keep doing what you're doing. You're giving them a gift that many far more 'privileged' children will sadly not receive. They will admire you for your bravery, your strength, your determination as well as love you for all that you do for them. You're providing a wonderful role model to them. You are doing a very, very difficult job with limited resources, and you have not given up. I can only imagine how hard it must have been to do all this on your own.
I'm sorry you're lonely. I've been lonely as hell this year. Covid, obviously, but sometimes we find ourselves in lonely periods in our lives. When all our time and energy is invested in children we end up with little left to give to ourselves. Once you start valuing & taking care of yourself a bit mroe, then I think maybe other people will show up and value you, too.
You deserve to be so bloody proud of yourself. I hope you can hear the sincere admiration from everyone on this thread. I hope you can also take some time to look after yourself, be kind to yourself. Be excessively gentle with yourself, as the saying goes.
Nobody in the world is inferior to any other person. That just doesn't mean anything, it's not true. We're not measured in worth, and certainly not by our house value, whether or not we can drive, whether we have a long relationship or not. This is all stuff that can certainly have a big impact on our lives, but equally certainly has zero bearing at all on our worth as a person. Nada.
What matters is our integrity, our courage, our loving, our patience, all that. All that you have.
You are equally as beautiful as the universe. Another saying. All the best, OP. 