Navigate to and tap Build Number 7 times until it says "You are now a developer."

TWRP creates an exact snapshot of your entire phone. This includes your operating system, apps, and data. If a modification fails, you can restore this backup to instantly fix your device. Custom ROM Flashing

I can give you the exact file links and steps for your specific setup! Share public link

Look for a verified, device-specific .tar or .img file on trusted Android development forums like XDA Developers.