I was born on 1951, so I can't claim to remember V.E. day, nor do I remember the day actually being celebrated in Scotland in my childhood, except by the local Army Veterans of both World Wars marching through the town.
What has always been a part of my life is the celebrations for the liberation of Denmark. Every year the Danish state radio broadcast their original record of the BBC's annoncement of Montgomery's victory at Luneberger Heide on May 4th 1945 and the candles placed in window-sills - a custom that sprang into being, as soon as people, who like my mother's generation had experienced it placed at their windows after tearing down the hated black-out curtains.
The 5th of May is a public holiday in Denmark, and the night between the 4th and 5th of May is the only day of the year that you are allowed to leave your flag out overnight, as those who had a flag-pole and a lot of private householders did and do have one in Denmark, raised the Danish flag after they heard the news of the total capitulation of the Nazi forces and so great was the rejoicing that peopl forgot to pull down their flags at sundown.
I agree, a lot of young people have not observed these days, but since the war in Ukraine started many of our children and grandchildren's generation here have started doing so.
If VE celebrations only look to the past, then they may not mean much to the young, if they are seen as an opportunity to declare how important democracy and peace are - then they may well be meaningful.