I think if Pence could handle it, they would replace Trump. But Trump is the person that will take down the whole Republican party if they try to remove him.

They don't want him gone. They are actively helping him dismantle democracy in the hope that he succeeds. If he fails in a decisive way, they will be on fox gaslighting the country about how they never supported him and tried to work against him, and it was all the Democrats' fault that he remained in power.