I want to download a course from RapidGator but I don’t have their pro subscription and don’t want to purchase it for so much money. The torrent has no seeders. The file can ONLY be downloaded with the pro subscription, slow free download is not an option they offer for that file. Can somebody help me out with temporary credentials or download it for me or is there some kind of service that downloads RapidGator links for free?

You can try the sites listed here: https://www.leechlisting.com/hosts/rapidgator/

Don’t go anywhere near them without ublock origin and shortlinks bypasser. Paying a little to a debrid service may be way less inconvenient than trying your luck with these sites.

How do they bypass premium links? I've always been curios about how they manage to do it. The only way I can think about is downloading from rapidgator and hosting it themselves.

In most cases they don’t really bypass anything and they simply have a premium account that they use to either download your file to their server and provide a link for you or forward you stream from tue hoster.

There seem to be many ways, though a trusted source that does the heavy lifting for you also seems a more efficient solution.