This is interesting.
How I interpret these results is that in the UK the young are very left wing and thus the Tories (just like every Anglosphere right wing party) are in serious trouble, as the Anglosphere youth are very left wing in general (I noticed that that's really the case compared to continental Europe).
While in Continental Europe I really don't believe that the youth are really left wing (at least in France) or against the right in general, I think what is happening on the continent is that the youth are rejecting the centre, they're either populist left or populist right now to a large degree.
I'm not sure what explains this difference though.
Maybe Anglosphere voters associate Christian politics, government surveillance, and war with right-wing politics while Continental European voters associate those things with Anglosphere culture in general.