Turnout among the young voter set was dismal in 2020 and yet they are horrified at what the state leg and Gov DeathSentence are doing.
However, our new county Democratic chair is 35; our recently elected city councilperson is early 40s (and won in this very red county by 35 votes!). They and some of their friends are working very hard to reach out to young people. We now have a 3-county Young Democrats Club and they meet both in person and via Discord. We're about to (finally) get a Young Democrats Club in one of our high schools (all three have Republican Clubs).
I echo what people said in post 1 - ask them. Democrats want to get involved, even younger ones, but they are in school, working, etc and really don't have a lot of time. I can't imagine them canvassing or phone banking but I can sure see them text banking, which has turned out to be a big thing.
They do things differently - just like we did vis a vis our parents and grandparents. It takes time, but look at some of the wonderful national figures we are seeing on social media - Victor Shi, Aaron Parnas, Olivia Julianna. They know how to communicate with their peers. We old folks don't.