Both of Trump's administrations were built on extreme pie-in-the-sky promises that him and his cabinet have absolutely no intention or capability of delivering, but still sell to their gullible, racist moronic followers as some magical One Quick Trick to resolve all their problems, such as housing, jobs, monetary inflation, DMV wait times, that one cold spot on last night's leftovers that the microwave refuses to reheat.
I'd argue the opposite. It was built on extremely doable promises that were framed as pie in the sky.
Trade deals like USMCA were worked out, while framed as groundbreaking and monumental for the common man.
The border getting tightened up and maybe putting up some barriers was a pretty minor project in comparison to many. Was like a few hundred miles of border that even needed physical barriers of some kind so would have been easily doable, but Democrats were fiercely opposed to the optics of throwing Trump a bone on it.
Trump also took a position on corporate inversion, wanting to create laws and policy orders to force companies to bring their taxable income into the US where it could and should have been taxed. He framed this as "oh these companies are desperate to bring their money in, but they need us to help make that possible!". For some reason, this promise largely got forgotten by both sides but I fucking loved it since it fucked over some of these Indian companies.
It was honestly a mandatory repatriation tax, from the Tax Cuts and Jobs Act, part of a transition from only taxing that income when it was repatriated which I guess pretty much meant much of the future earnings were basically tax exempt. So we fucked over the assholes and made them pay up.
Then you had stuff like the DoJ policies enacted about telling migrants to wait in third countries rather than getting to reside in the US while getting processed as to whether we'd accept them. Was pretty ordinary stuff that both Democrats and Republicans would largely be ok with.
You also had the policy of opportunity zones, 10 year long measure, that was done to help increase investment in low income areas. Was marketed as something purely to help black people for whatever reason, but helped a lot of areas get more housing developed which is a pretty big deal (especially given how hot a topic it is in politics now).
A lot of the successes likely had to do with Trump having much more reasonable people working for him in comparison to this time around, while Trump would still put his signature spin on these topics to help sell them to the public. I think there is an issue though that people got into weird memes of what all would radically change about the United States, like making it into a mostly white utopia, that were unrealistic and that they're still stuck on. They want to see all visas end and even non-white citizens or legal residents deported, which Trump 2.0 is wanting to say they're trying to make a reality even if it isn't realistic (or even when Trump is saying outright at times they're not wanting to do).