I'm a Canadian, so my opinion has no real bearing on this. Take this with a brick of salt.
Not voting for Biden (who I greatly dislike) would be cutting one's wrists to spite their face. The US has a two party system masquerading as an open field democracy. It is either Democrat or Republican. No third party has any chance of claiming the presidency *at this moment in time*. Maybe when the Republican party finally implodes, you might get a better alternative. But as things stand at this moment in time, voting for Biden is your populace's only chance of survival.
As I said, this is just my outsider opinion.