I recommend using Firefox to run gallery-dl.
Get the "Export Cookies" extension for Firefox. Easily googled.
Navigate to coomer.st, wait for the DDOS guard thing to resolve, go to your Export Cookies icon on the top, and export cookies for coomer.st. Save that file to your desired directory (Downloads)
Open up Command Prompt
Change directory to your Downloads directory
Run the following string to start downloading the first 50 objects
.\gallery-dl.exe –cookies cookies-coomer-st.txt –range 1-50
https://coomer.party/onlyfans/user/belledelphineNote how you're using coomer.st cookies, but downloading coomer.party objects
Here's an example if you only want to download *videos* over a certain *file size*
.\gallery-dl.exe –cookies cookies-coomer-st.txt –filesize-min 150M –filter "extension not in ('jpg', 'png', 'jpeg')" –range 1-50
https://coomer.party/onlyfans/user/kinkymarisol