Why my fingerprint sensoe is not working?

You could try redoing your fingerprint for touch ID.

Steps:

• Open Settings.
• Go to touch ID and passcode.
• Enter in passcode.
• Change passcode or setup alternative appearance.
• Hope this helps.

It sounds like you may need to have your fingerprint sesor calabrated. Go to your fingerprint settings and click on them if it says you fingerprint sensor calibration needed. then you will need to calabrate the sensor. This is common after screen replacements on Android phones with finger print sensors in the screen. Also if you are running Android 10 it pairs the screen and motherboard but the A33 is new enugh that it sould be running a newer version.