I'm one of a few "fluent" speakers of Lojban. I still think that among similar attempts (including controlled English) Lojban is the best option so far.

I even wrote a new course for laymen https://lojban.pw/books/learn-lojban/

Needless to say, few people invest in learning new languages at all.

If you are interested you may join the discord chat

https://discord.gg/c8weYzf