I could see this scenario:

Commie/pussies in the Supreme Court (including Roberts) fail to countermand the presumed authority of district judges.

(and I seriously hope they do and push down the authority of district judges - this is an existential crisis for the very definition of what the POTUS embodies.)

Trump instructs his admin to act/continue to act on his policies anyway. (Which I agree with, there is too much at stake to allow district judges to set legal precedent like this.)

The AG is Pam Bondi, sworn to uphold "the law" whatever the fuck that is in today's climate, but is disinclined to go with anything outside her favored side. She would not assist in enforcing the district judge's decrees. I suspect even if she is by legal definition supposed to support the judge's overreach she will not.

What happens then? They start attempting to arrest Trump's cabinet members or outside helpers like Musk for acting illegally?

This country's about to melt down and it's the god-damned fucking commies and leftists to blame for poisoning the US since Obama took office.

If Trump has to defy the judges' rulings openly in order to implement policies you will probably have local law enforcement and judges in every single state making arrests and creating injunctions randomly depending on the local whim. That will be the point at which you have massive funded riots by the left and martial law. The entire concept of order will be lost.