Review on HiLetgo GY 271 QMC5883L Compass Magnetometer by Sheppard Priest

I'm a mechanical engineering student and I work with Arduino as a hobby. I'm not good at programming and rely heavily on copying from the internet. The library returned nulls, and no attempts at it changed this result. I tried 4 different codes to get values from it and all failed. In a word, this toy is not for beginners. Only buy if you know what you are doing.