Why is the American government becoming a joke?

I’m not American and by all means I mean no offense to American people, but why is the American government doing classless behavior?

People Like Elon Musk and recently Connor McGregor are given high political influence despite having ZERO political background. Also, after Trump assumed office, he started saying things that are unsuitable for his position as POTIS, like displacing people of Gaza and taking over.

This behavior is extremely unusual imo especially for the “most powerful country in the world”. Is it just me or do people agree?