So you bite the bullet, and make the less evil choice

Only if it actually matters. If the election will go to the same party every year, then it literally doesn't matter if you vote for or against them, so you might as well vote for a candidate you actually like. Every position on my ballot has a 20%+ spread, with some >30%, so there's no benefit to voting for the minority party over a third party.

So I change my party affiliation to the dominant party every election so I can vote in the only primaries that matter, then I vote for whatever candidate I actually like in the general election. If third parties get enough percentage of the vote, they get reliable ballot access, and that helps give them more visibility. If a particularly good candidate polls well enough, they'll be invited to debate. That's the dream, and I'm hopeful electoral reform would be a key part of such a debate. If you have a strong third party candidate in the debates, maybe that'll get the public to care.

Then you do it over and over again until the party that is actively trying to destroy democracy no longer exists

That isn't how that works. Both major parties thinks the other is actively trying to destroy democracy, so they're very likely to retain their base.

The solution, IMO, is a grassroots movement where a bunch of candidates all run on the same platform, and pair that with peaceful protests. That's how you get visibility into issues like electoral reform (again, ideally Approval or STAR, not ranked choice; I think ranked choice would still result in a 2-party system). Ideally run those candidates within the two-party system, but running them as third parties is better than nothing IMO, they'll still get some visibility.