Servives get less and less views.

For a couple years I got a few new customers from my Kijiji Ads (I’m a private music teacher). Since last year, I get less and less views, I even tried to pay a bit to boost and still nothing. What is happening? Does any one else have this problem?

• it sucks that services are not allowed on Marketplace, every time I try Facebook just deletes my post and gives me a warning.

Did someone find a way around all this? Thank you.