Bonjour, Jacques! I'm nowhere near as active as you (on foot or on the Internet!) but I try to hold onto my high-school French by reading French websites, like the FQN (Quebec Naturist Federation) and the APNEL site (Association for Promotion of Naturism in Liberty). Just like you, I get help from online translation services.
I don't participate in Naktiv because it's adults only, as SNS unfortunately was, but I do have an account there because I went on NEWT2017. There were 6 French people on that trip, of whom 4 spoke very little English, and I enjoyed the chance to talk with them, even if it had to be pretty simple conversation.
I hope you'll be an active participant here, and please don't worry about the language. Bienvenu!