The American justice system deserves to cease existing if 4 years isn’t enough to process people for possibly capital crimes (J6 coup attempt). No state can afford that.
Even if MAGA loses in 2028, I have very low confidence that Trump will see any consequences for his crimes. There's also the fun self-pardon-by-proxy trick: on the morning of the last day of his administration, he resigns. Vance is sworn in, pardons Trump for anything he's done, and then passes the presidency on to the next one.
Regardless, Trump is old. Even if he's convicted of something in 2030 or whenever, he probably won't go to prison. He may even be dead by then; he'll be nearly 85, and no matter what his doctors have been told to say publicly, it's hard to believe the man is in super great health.