Facebook tweaking tweaking?

Some context: So I havea fresh ad account and I am finally getting around to testing everything. The structure is one campaign (optimizing for conversions) 4 ad sets with different advantage+ targeting options, so I can loosly find the best audience. With 3 ad creatives to test in each. I am running a discounted offer for my landing page via shopify. Budget is about $40/day, and my product costs around $10.

The problem: So I have been testing for about 5 days so far. I have only recieved one conversion, but the data is the interesting part. So the day I got the conversion I had 2-3 ad to carts, and a 3.13% conversion rate. But every since then Facebook has been flooding my page with "visitors". 60+ per day, according to Shopify. But when I check my ads manager, it says I have only recieved 8 link clicks. It makes no sense. Litteraly on the day I got my first conversion, Shopify says I recieved around 30 visits from Facebook, but in the ads managed it said I only got 1.

This data is just very confusing and I am not sure if I am doing something wrong or if Facebook is tweaking and just sending me bot visitors on the backend. I really have no idea. Thinking about switching to TikTok ads because I hear it is performing like OG Facebook ads.

Thoughts?