Legal Advice

Sorry to hear about your situation. It's not clear what kind of legal advice you need, however if it has anything to do with social circumstances such as your living / rent / family situation, then you should contact the CPAS

http://cpasbxl.brussels/

If you need legal advice about something else, (like you've been called before a truibunal for example) then the "Barreau de Bruxelles" (The Brussels Bar, or a sort of lawyers association) offer a legal service
https://barreaubruxelles.be/particuliers-entreprises/aide-juridique

Join a union.