If you are far right, in order to be just right you need to move towards the left. It is as simple as that.
That's not how politics works. Politics is not a game of one dimensional lines, but positions. We currently are in a Neoliberal hellscape under a genocidal Neoliberal. Voting for the genocidal Neoliberal will continue said genocidal Neoliberalism. It will maintain the position, and move no closer to Socialism.
If Trump gets elected, Neoliberalism will shift towards fascism/right-wing populism.
Neither Trump nor Biden represents moving to the Left, and will not.