CloudFlare Bypass Solution for POST Requests

There is a site to which ClodFlare protection was recently connected.

There is a POST request on this website that provides the data we need.

On this POST-request (as well as on the entire site as a whole) - hung cloudFlare protection. In short - a POST request is made in the browser, and it gives data (will give 200 response), but:
If you copy all the headers, User-agents, data transfer parameters, etc., and process this request using any YAP (python/javascript/C/C, etc.) - gives a 403 error with a stub from CloudFlare

We need to find a solution to this workaround, demonstrate the working version, and in the future it is possible to adapt to our tasks.

The most important thing is to find a solution how to circumvent this protection. Whether it is some method, YP, etc. - it does not matter, the main result is

The site, access to the site and the POST-requests themselves will be sent if necessary in private messages when contacting