I forget where I read it, but there was a study recently (might have been US-focused but suspect it's similar here too) that basically said that young people are often more politically engaged than older people, but their engagement takes the form of things like petitions and social media rather than voting, which is kinda the only way the elderly engage.
Ah yes, here it was
https://academic.oup.com/cjres/advance-article/doi/10.1093/cjres/rsab012/6322445?login=true
From Cambridge and looking at communities across Europe. Older, rural voters were far less politically engaged than younger, urban voters, but much more likely to vote (and to vote conservative).