I don't like Biden either, but anyone with half a brain knows there are two choices in the 2020 election. If we had a sane voting system, voting third party might be worth it, but as it stands, no one but you knows your favorite candidate exists and unless you want to become their campaign manager that will still be true in November. Even if you did, and even if you convinced two thirds of the people who would otherwise have voted for Biden to vote for your chosen candidate instead, Trump would still win because half the country voted for him and your guy only got a third. If you vote third party you might as well stay home.
Not voting isn't going to stop the genocide in Gaza. The US will continue to funnel them arms no matter which candidate wins this November. Trump practically campaigns on how much he hates the Jews and he's publicly told Israel to "finish up their war". He'll also make life a living hell for anyone who isn't a straight cisgender male back here at home.
A vote for a candidate is not an endorsement of them or their policies, it's a statement that you like their policies more than the other guy's, and "sticking it to liberals" and "refusing to support genocide" (that's not what voting for Biden is doing, by the way -- a vote for either candidate is a vote for genocide and a vote for neither is an endorsement of both) is not more important than keeping the furthest right politician America has ever seen out of office.
How incredibly privileged do you have to be to see an entire national election as what will happen in the Middle East and ignore Trump's campaign promises to wipe transgender Americans off the map, and further, to not realize that the same thing will happen in the Middle East regardless of which candidate wins?
I hate Biden as much as every other leftist here. But I'll still vote for him because Trump is worse. If there's a single bone in your body that cares about the lives of your trans friends you will too.
Rest assured, the US is not a democracy and we know it.
We do still lie to our kids about it as a part of indoctrination, and so we have to have this conversation every year.
But we're also on the verge of change just because there are no more excuses. The public can record the situation on the street and the rest of the public can see it when it's uploaded to the internet. All the myths that kept liberals in doubt are gone. Hence the far right is going full autocracy.
Petitioning our representatives for the redress of grievances doesn't work either, so it's going to get exciting either way. But I'd rather we didn't go gentle into fascist autocracy, but went down flinging our sabots into the gears of capitalist industry.