These plugins typically only run reliably on macOS versions up to 10.14 Mojave , which was the last OS to support 32-bit apps. Common Legacy Plugin Suites
If you still want to proceed with downloading FCP 7 plugins using torrent files, here's a step-by-step guide:
Torrented files for discontinued software are frequent carriers for malware and keyloggers, as there is no official source to verify the integrity of the files.