[Python] Imitate post request triggered by button on website in python requests

I'm attempting to imitate the post request being triggered by the 'Download as CSV' button the webpage https://www.bundesanzeiger.de/pub/en/nlp?2. However I'm consistently returning an error webpage rather than the csv file.

Inspecting the html for the button gives the following:

<form method="post" action="https://www.bundesanzeiger.de/pub/en/nlp?2-2.-top~csv~form~panel-form" id="idf2"><div id="idf2_hf_0" hidden="" class="hidden-fields"></div>

<a class="btn btn-green argus-A98" target="_blank" href="https://www.bundesanzeiger.de/pub/en/nlp?2--top~csv~form~panel-form-csv~resource~link" title="Download as CSV"><span>Download as CSV</span>&nbsp;&nbsp;<i class="fas fa-file-csv"></i></a>
</form>


I had interpreted this as the html request being sent to the 'action' url with the payload id='idf2', and wrote the following snipet:

import requests

url = 'https://www.bundesanzeiger.de/pub/en/nlp?2--top~csv~form~panel-form-csv~resource~link'
payload = {'id': 'idf2'}

r = requests.post(url, json=payload)
r.content


However this just returns a webpage saying that there's been an error. Is there something I'm missing from my request? I also tried supplying a 'User-Agent' in the headers, but this doesn't seem to work either.

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