Why is the selfie overexposed when using the HDR mode of the front camera on the Redmi 13?

The reason that the face is bright and the image is blurry when using the front camera is that the HDR algorithm performs a comprehensive optimization based on the entire situation of the subject. It is recommended that you hold the phone steady during shooting and avoid taking pictures in scenes with strong backlight. The issue will be optimized and resolved in the future.
Note:
Due to the high resolution of the camera (100 million pixels), prolonged use for taking pictures can result in increased power consumption and some heat generation in the phone. It is not recommended to leave the phone in photo mode or record videos for extended periods to prevent battery draining fast and overheating.