It isn't a 'fight'; Trump failed to follow through for his voters in Tennessee, Louisiana, and other states and leave a ground game in each precinct to ensure his voters had representation at the precinct level to choose delegates for him. Breaking promises right after getting the votes. That has to be a new record. Most candidates at least keep the promise to actually be a candidate and complete the responsibility of that.
It is like winning a bid to construct a building and not show up on ground breaking day.