I'll give it a shot. Apologies for responding so late on this.
The issues that move me are the following. I like to see a strong US military, specifically the US Navy. Since the navy is the lifeblood of the community I live in. The other is having affordable housing. At this point of my life, I'm just rebuilding my life after it was upturned by the Great Recession. Education wise, I'd want to see not just affordable college tuition, I want to see trade schools and skilled labor education to be equally valid instead of being dismissed and looked down upon as "dirty work". Another point is that I work in a union shop and I don't want to see unionization get chipped away and diminished.
No need for apologies. We'll take this at your pace. We've got 100 days.
You don't need me to tell you that, broadly speaking, Democrats are way more pro-union than Republicans. Even if Democrats have stopped doing nearly enough on this front, Republicans are positively hostile to unions. Both sides are waking up to the importance of trade schools; I think it gets featured in both of their platforms. I suspect Dems will be more committed to affordable housing, as a principle; I don't know how much they'll in fact get done on that front. But Trump himself (not surprisingly) skews very heavily toward policies that favor landlords (and that of course means less affordable housing). For years, both parties have been pro-military, so that one's probably a wash. In my youth, Ds would talk about cutting from the defense budget as a way of helping afford social programs, but then that went away years ago. Everybody on both sides thinks we need by far the biggest military on the face of the planet.
By the way, I think I've picked up that Trump is not an option for you. But if I nevertheless mention what Rs will do, it is because, as our system exists, it's going to be one or the other. So for things that presently exist, and that you care about and don't want to see damaged (unions), it matters what would happen should Trump win. For things on which neither is likely to deliver (affordable housing, I think), then it's a wash, and Harris shouldn't get your vote if she's not committed to your causes. But on issues where damage can be done, no-vote or a third-party vote increases the likelihood of a Trump victory (by comparison with a vote for Harris), and thus opens the possibility of that damage.
But while we're on that, have you found a third party candidate whose positions align with your own on these issues? Lex, e.g., couldn't vote Biden, so he found a socialist candidate who, while not likely to win, at least represented, for him, a vote for the things that he thinks would make our nation better. Is there any third-party candidate like that for you this cycle? Who has spoken persuasively about housing and unions, etc.