FB marketplace is the least useful marketplace ever made as it often doesn't send the messages to sellers due to privacy settings, and sometimes I think it blocks out people if they don't have a legitimately looking profile, but as someone that detests fb and everything it stands for I am not putting pictures of myself or private details, I even proceed to only communicate with the sellers through email. I do use it sometimes though and great bargains can be found. But the fact that Facebook isn't a dedicated marketplace means that a bunch of people put stuff for sale and forget about it, in contrast to dedicated platforms where the only goal is buying and selling. Also, feck off Zuckerberg.