Do not chase "Android 11" for 8227L – it is almost always fake. A properly configured Android 8.1 or 10 (Go) firmware will be faster and more stable.
Need help identifying your exact MCU? Share your Settings → About screen photo (or type out MCU line) in a reply. 8227l Android 11 Firmware Download
Once in recovery (blue or black screen with text): Write down the prefix (MTCE, MTCD, JY, etc