That whole 'most powerful man on the planet' thing is just a line in newspapers to make you panic.
And the same way that life still goes on no matter the politics, that's true for the vast (and it is vast) majority of Americans.
I STILL can't believe how much MN worries about the Americans. I guess, like Razorlight, they can't sleep.
If Brits put half or even a quarter as much effort into their own country as they do worrying about the US, things in the UK could be very different.
After the crazy Brits voted for Brexit, it was a nightmare. Every morning I woke up to a new announcement of doom. Maybe the Brits on this site remember those intense days.
I guarantee that, compared to the average Brit, the average American has no idea what is happening in the UK and doesn't care! If I go to a meeting, there's guaranteed to be a pot-shot at the Americans but I'm sure that if I moved to the US, there'd be no mention of UK politics.
So, stop wasting your time thinking about the US. Take steps to improve your life. As Arthur Ashe said, 'Start where you are and use what you have.' [oh, whoops, he's an American ...]