If you are looking for a real jailbreak, check the following trusted sources based on your iOS version: The AppleDB Jailbreak Chart

It often installs a fake version of Cydia or Sileo that does not actually function.

Jailbreaking itself exists in a gray area, with its legality and ethics often debated. While jailbreaking is not illegal in many countries, including the United States, it can violate the warranty of the device and potentially allow users to engage in illegal activities by installing pirated software or exploiting security vulnerabilities. Users should be aware of these implications before proceeding.