Need Facebook ads advice.

HOIL is a wellness brand offering CBD products (currently CBD oil, with skincare products on the way).
We’ve done our research and discovered that there are other CBD brands who managed to set up FB Ads successfully, by making the ads very indirect, promoting wellness and the effects of CBD, rather than CBD itself.

We would like to replicate what they did, but our ads are being rejected by Facebook despite being very similar to the ones we've seen. We are suspecting that we were flagged due to our past activity.

I believe that someone with a deep knowledge of Facebook Ads mechanisms would be able to tell us if we did anything wrong, and if we did, how to straighten things up and replicate what our competitors have done (can provide more context later).