The easiest way to increase turnout is running a young charismatic candidate with a progressive campaign, like 08 Obama....
Unfortunately we don't have that option this election, probably not 2028 if Harris wins this one, so keep your fingers crossed for 2032 when people might be able to vote for a Dem candidate and not just against the Republican candidate.
Until then we're doing the same dance as the last decade, holding your nose and hoping shit at least stops getting worse. And praying enough other people do the same.