If you can’t rent a place, is it possible for you and your brother to compromise on schedules? For example, going in the morning and just staying the whole day, and whenever one of you has free time you can go to the library or a nearby cafe, or even taking a nap in the car? That would give you time for jobs, internships, volunteer experience, etc.
And if thats’ not possible, is it possible for you to take a train or some other public transportation to campus? If there’s a train station near your house, you’ll probably be able to take it to somewhere near your campus and walk/uber the rest of the way.