My dear, of course we can help, and the first person who can help you is you! First I am sorry for your loss and your circumstances, yes family can be a plague sometimes!!! Let's remember that our family are human beings and they can have all the flaws like we can.
SO, you make different plans and move on with your life, first you have people who have let you in and that is great. Now, look for a job and/ or training. You are 20 years old, you have all life in front of you to study, work, train and get a career that will be good for your wallet and maybe also for your bodymind.
This is the new year, make a resolution to put your head up and don't let nothing and nobody drag you down.
You are young, you are strong, you can have faith in God and yourself to start a good life for yourself and your brother.
Close your eyes, empty your mind, then take a piece of papers and make a list of opportunities or people that can help you get a job, see what career you want to start and go to an educational counselor to decide concretely what you want and can do as soon as the holidays are gone.
Love and peace to you and all
Watch over you, take care of you, prepare the future for you...and your brother