Can i make it so if an inno is killed it changes their team to Criminal?

So I'm trying to make a game where you fight and get cars and stuff like that. So I want a script where criminals get guns, a lockpick, and a wallet for money. Civillians get only the wallet and if they buy a car they get keys to spawn the car. Police get guns, handcuffs, and a taser. I also want if a Civillian dies to a cop or another Civillian they switch to the criminal team. Sorry if this is too specific i just suck at making games and coding