Development and linking of the Facebook Pixel + Convertion API to Shopify ecommerce

Hi,
we have an ecommerce developed with Shopify and urgently need to connect it to the FB pixel and conversion API. At the moment we have a pixel installed but it gave a lot of problems with data deduplication and in operation.
To avoid other problems with this Pixel we need support to remove the old pixel and create a new one to avoid other data flow problems.
So we need support from a pixel expert to:
1. FB and Shopify must be perfectly connected on the shopify platform for the FB shop to work.
2. the pixel must have all the events of the purchase funnel (image attached)
3. the API must work together with the pixel, when it works properly you can see 2 lines in the graph. the pixel tracking line (blue) and the API line (blue).
4. the API to work well with the pixel must deduplicate the same data, otherwise duplicate data/events are received and thus the retrieved data is incorrect.

My ecommerce is this:
https://shop.labottegadiefrem.com

Thank you!