Trying to advertise locally

Hi all, I am trying to publicize my Japanese lessons but I'm not having much luck at the moment. The neighborhood facebook pages seem to find my post quite suspicious and flag them down within 10 minutes. I am trying to keep it super local without too many travel/online lessons and I see that many other people post their businesses or friends businesses but for some reason mine is immediately deleted outright. Is there something I'm doing wrong or need to consider when I post these?

Does anyone have any experience around tutoring/private language teaching in the area? I would love to know how you started off. I'd also love to know if there are any legal places to put up flyers. I haven't fully gotten my bearings yet so I'm still not quite sure! Thanks (: