I think there are two major purposes in government. First, protection for its citizens. This includes military protection from hostile foreign powers and domestic protection from interpersonal crime and systemic violence as well as providing safety nets.
The second is creation, protection, and maintenance of public infrastructure, including transportation arteries, healthcare systems, etc.
Furthermore, government should be centered around protecting all its citizens, not just the richest.
Idk man, I have it on good authority that JFK’s head just did that all on its own.