Don't let fear motivate your vote. Fear is how we get trapped in this politically polarized binary nightmare. If the best reason you can think of for voting is "I have to vote for X because I'm so terrified of Y" that's how they get ya. That's what made 2020 voter participation the highest in a generation, not confidence or optimism, but raw fear. And it's what keeps the population shackled to a broken system that none of us like, but none of us have the courage to oppose.
If you don't feel that any candidate has earned your vote, don't vote. Moreover, don't let anyone shame you into voting if you don't want to. An abstention is a perfectly valid way to exercise responsible covic duty. Nor does voting "give you the right to complain" or whatever.
"If you didn't vote, you don't get to complain," nah. I'll go ahead and tell you, I'm not gonna vote for either of these guys, yet I (justifiably) won't hesitate to complain about the eventual winner on a daily basis if I want to. Why? Because I'm making a politically informed decision to abstain from voting for this broken two party system. And that decision is neither lazy nor irresponsible.
If you choose to vote for either major party candidate, that's your right. But, if anything, YOU'RE the one who has lost the right to complain about our broken two party system. If it's a clear problem, you recognize it as a clear problem, yet you choose to feed into it anyway, then you're the one with less justification for complaint.