One problem about building an electronic level with Arduino

I want to build an electronic level with MPU-6050 and Arduino. I have one of my MPU-6050's mounted on a breadboard and started the example in the library but the numbers are drifting quiet a lot with the non-moving module? Today i maybe try it with an other MPU-6050.

I have no experience in using this sensor. Drifting should not be a problem if the drift is relatively small compared to the values you see when moving the sensor.
I found this example on the internet. His values also drift somewhat. Check if yours are comparable.
https://www.kynix.com/components/MPU...no-Pinout.html