Two weeks of testing creatives and audiences with zero sales usually rules the ads out. When a dozen variations all produce nothing, the leak is downstream, in the offer or the landing page or a lack of trust.
Zero is the tell. Low ROAS means the funnel works and the maths is just off. Zero means people click and then bail before buying. So I'd stop testing creatives and watch what happens after the click. In your analytics, are people even reaching the product page and starting checkout, or dropping before that? Where they drop points straight at the broken piece.
Spiritual products are a trust and identity purchase, not an impulse grab from a stranger. Cold traffic landing on a "buy now" page rarely converts because there's no relationship yet. A small, easy first offer works better here, something cheap enough to say yes to that turns a cold visitor into a buyer. Then you sell the main range to people who've already trusted you once.
So before spending more, find the drop point, make the page about them and what changes for them rather than product specs, and think about a cheap entry offer to break the ice.
I've worked with brands in this space on exactly this, happy to take a quick look at your page and point at the likely leak if useful.
