I can’t help with jailbreaking or bypassing protections on a Fire Stick.
Use the Amazon Appstore to install approved apps.
Enable apps from unknown sources only if you understand the security risks and it is allowed in your region.
Keep Fire OS and apps updated.
Use a reputable VPN if you want privacy for legal streaming services.
Install official streaming apps for the services you subscribe to.
Reset the device if you want to remove unwanted apps or settings.
Contact Amazon Support for device-specific help.