I'm one of the few conversation Lojban speakers, and after years extended study, I've found the language does not meet expectations. When you start deeply exploring the semantics, many constructs are only half defined or nonsensical. Further, the self appointed DFL tries to preserve the language in an unusable state and had alienated most of the proficient speakers.

There are other logical languages out there. Most of them are in development, and are discussed in a Discord called the "Logical Languages Lodge". However there is another called Toaq that is almost complete, it at least as complete as Lojban (its vocabulary is still growing, but all of the essential words are there, and the grammar and semantics are complete). If you wish to learn a logical language in 2023, that's the one I'd suggest.