I don’t know anything about living in Portugal, Durval. Here’s one thought though...Would it be easier for your mother to be put into appropriate accommodation and care if she isn’t considered to have you as her carer? You’ve been looking after her for ten years, and now you face being homeless. Suicide should never be an option. What a waste of your life. You’re still young and deserve a chance to get back on your feet and find happiness.
Talk to social workers and your mother’s doctor. Tell them that you can no longer care for your mother. I suspect they’ll be able to find her some care alternatives.
Then you can concentrate on getting yourself work and a room in a shared house. Visit your mother, and give her good news about your progress as you get your life in order.