Since the film is not in the public domain, you’ll need a legitimate service:
Eggsy didn't expect the mission to lead him to a dusty server farm in the middle of nowhere. "Merlin, I thought we were hunting hackers, not librarians," he whispered into his glasses. kingsman golden circle internet archive link
If you are looking for a "free" experience similar to the Internet Archive, try ad-supported platforms where the film rotates in and out: Since the film is not in the public