One where one person in power, president or not, can not do pretty much what ever they like

This isn't just Trump's work, though. He can do "whatever he likes" because both houses and the senate are all red. If he changes his mind halfway through and becomes a liberal, watch him become somebody who cannot do whatever he likes.

This just makes it worse because I've seen so many people defending Trump, or adopting a "what's the worst that could happen?" attitude because they are used to a president who, for 7 years, 10 months and 2 weeks didn't have an ounce of power in congress.

Trump can do what he wants because his party now has control of the Presidency, the Senate, the House, AND the Supreme Court.

It was a huge, overarching win granting Republicans unprecedented power. Much like Obama's 2009 win which gave Democrats a ton of power.

There's nothing "single person" about Trump's victory. The fact of the matter is that Republicans won more States, Representatives, and Senators in local elections across the country. So yeah, the Democracy is working fine, as long as you sorta ignore the electoral college stuff.

Believe it or not, that's what people "wanted". The Democrats IMO were just too lazy with the get-out-to-vote attempts and support Clinton. The Republicans wanted victory more, and managed to pull it off.

How about a parliamentary system? How about just fixing the problems of presidential elections?