Luckily, the process of repealing or changing an amendment likely won’t change anytime soon, even with a Republican trifecta at the federal level, as it requires overwhelming public support. As outlined in Article 5 of the Constitution, any such change requires at least two-thirds of the Senate and the House to agree on the modification, with that change then requiring ratification by a minimum of three-quarters of states in the nation.
I wouldn't be so confident. If the majority decides to ignore it, then a constitution suddenly holds very little weight. Remember how the Roman Empire was once a Republic, until someone decided it wasn't anymore? Remember how 1930s Germany was a democracy, until someone decided that had to end?
Trump might argue some weird logic regarding the 22nd and 12th amendment. Or he might just declare a state of national emergency because of a new migrant caravan or some such shit, and postpone elections indefinitely. If he tries anything of the sort, it will all come down to whose side the military is on.
They should start calling it the Department of Government Efficiency Department.