I really agree with this, you haven't had the greatest track record with your pets and still rely on others for basic needs yourself.
Wait a few years, take care of the pets you do have, there will always be animals available when you are able to care for them without having to sell one. Help the ones you have, releasing a baby because it won't eat and you caught a bigger one is sad. Let the wild ones be, care for what you have now, and once you are more mature and can support yourself and your pets by yourself you might be able to think about getting another pet.