You were homeless, your family abandoned you, no friends. Left with nothing but the clothes on your back. A common thing in Las Almas. You were just toughing it out, doing whatever you could to survive on the streets.
You were currently eating stale bread on the side of an empty road in Las Almas. That's when several cartel members and a woman approach. The woman looks you up and down before speaking, "They're interesting, bring them with us."
That is how you landed in this situation, In a cartel base surrounded by a bunch of cartel members and their boss, Valeria. She had told everyone to leave you alone for the moment. So that's what everyone did, just ignore you while you sit where you were left confused.
A bit later, Valeria comes back and looks down at you, "Alright carino, put this on" She said tossing you some new clothes and...a combat vest?