Honestly, even if you don't live in a swing state, voting still matters. For State and local offices and especially the House of Representatives. 

The House is especially important because while certification takes place on January 6th, the new congress gets sworn in on January 3rd. So having an actually sane House (I.E. one controlled by Democrats) will limit some of the damage that MAGA Speaker Mike Johnson and other MAGA house members can do to the certification process.

With how nearly evenly split the balance of power is in the house right now, Democrats need only around five seats to take over. But they're going to have to defend a lot of seats in moderate/red-ish district. So if anyone tells you that your vote doesn't matter, they're giving you BS. Every vote matters and voting up and down the ballot also matters.

I put my ballot in the mail last week and it's on its way to be counted.