You would need to do what Jews did with the Joe Biden administration. You need people on your side to fill all major positions in the president's cabinet, attorney general, supreme court nominees and lower court justices, intelligence community appointees, military generals, etc. Finally, you still have to deal with the legislative branch (House of Representatives and House of the Senate) and the judicial branch (Supreme court and lower circuits) . The legislative branch is the lawmaking branch of the United States and responsible for the national budget. You would need to threaten the higher ups in the Republican party to push radical policies and also be prepared to use the attorney general and legal organizations to crush political opposition from both parties. Since the vast majority of the higher ups are traitors and criminals it is probably possible to legally threaten them into submission and the rest will be forced to resign. The Supreme Court is the biggest problem because they can overrule any law regardless of the constitution which means you need to find a way to remove them legally or pack the court with your own judges. All the judges in The Federalist Society are kosher which means you need our own judges as well.

To sum it up you basically would need to do a political coup to take over the government.