In the US it's not really feasible to vote 3rd party without throwing your vote away. Something like the parliamentary systems would work better, or perhaps a ranked choice. You are going to have either the R or D candidate as president. Best to choose the one you can stomach the most.
https://en.m.wikipedia.org/wiki/Duverger%27s_law
It should be changed, but would require a rewrite of a lot of the constitution.
Then you are voting for the greater of two genocides, which seems worse tbh.