Actually we don't "know" anything. The last Trump presidency was a WHOLE lot of standard Republican giveaways to the ultra-rich, some extraordinarily good things like rapprochement with North Korea and some extraordinarily bad things like getting out of the Iran deal, assassinating Soleimani, and moving the US Embassy in Israel to Jerusalem.
Trump WAS elected president. Also in 2016. Not by me, but still elected. The people Trump chose to follow him in many cases did not follow as promised. I think a lot of this is because in 2016 Trump didn't expect to win and at least half didn't want to win and was not prepared to take office in January 2017. The initial team was thrown together in haste without much if any vetting.
Trump has very heterodox views which can be good. He is also corrupt, lazy, stupid, racist, sexist, a con man, and a dishonest businessman - all of which I put in the "bad" column.
He was still elected president and has the right to push for appointments of people who will do what he says, rather than what the entrenched US government (i.e. "deep state") want done.
The US has been on a steady downward spiral (IMO) since Reagan. Trump is either going to accelerate that in this term, or at least shake things up enough to stop the slide, if not reverse it.
To state ahead of time that you "know" the future is just bullshit.