Probably none, sorry. If you wanted to pirate something on Android, you would have to either download a closed-source piracy app, which you can only hope doesn’t have any malicious code inside, or download unverified .apk files from random websites, also a bad idea.
Fire OS, the operating system on Fire sticks, is essentially Android with Amazon’s stuff on top of it. If there is an app that enables piracy on it, I wouldn’t trust it.
If you want to pirate Films&Series on Android, I would highly recommend cloudstream-3 (extension based, recloudstream/couldstream on github). I don’t know how well, or even if it works with a amazon firestick, though.
Works like a Charm on my Android tablet and looks and feels very similar to Netflix.
search up addons4kodi on reddit have whole guides on how to make firestick great for watching movies and tv if thats what you wanted
