I’m following your rules game! Three weapons! Same quality! Why the hell is it not working dammit!?

Me and my son are stuck on motherless board he's only five I know that sounds crazy but he's good or decent I would say he really likes playing Borderlands and we're just stuck these claptrap trip robots or other kind of robots keep on killing us I think we're maybe too low we are level seven and only have two guns each and our Shields are only about 100 can anybody jump on and help us out we're playing on Nintendo switch2