Welcome! I would recommend jumping on to the British Naturism website and looking at what events are in your area. You’re within the age range of YBN so try and get to some of their events! Some events are members only so to see them all you would need to join. Not a lot of money as YBN and you can join “paper-free” so no chance of anyone finding a letter, magazine or membership card.
It’s not nearly as scary as it may sound! I was at NKD festival a couple of weeks ago, it was amazing. Have a look at Everybody Festival 👍