Yes, most files hosted on these types of platforms are offered for free. However, "free" often comes with a hidden cost in terms of security. Since these apps are not available on the Google Play Store, they do not undergo Google's Play Protect security screenings. The Risks of Using Third-Party FRP Tools
All of this (according to some versions) or with root (according to others).
: Ensure the APK has a verified developer signature before installation to prevent APK fraud.