I need this done without any browser dependencies, which means all based on HTTP GET/POST requests.
Example (recommended) is requests library described here https://www.geeksforgeeks.org/get-post-requests-using-python/
The whole script has to be made in python, selenium or any other tools that open a browser are restricted.
The GUI/browser example has the following steps, this demonstrates what has to be done with requests:
Open up https://www.twitch.tv/
Click Log in
Get username and password from .json file and enter them
click the crown icon (or search this in URL: https://www.twitch.tv/prime?ref_=SM_CM_RUNE19_MIC)
find RuneScape & Old RuneScape Membership
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