I can understand the concern you have Dronenoob-TN but the simple fact is that the vast majority of Mavics behave perfectly. It is an effect of any forum like this, that the genuine issues that some people have are (rightly) given high exposure but as a percentage of all Mavics, it is an extremely small number.
My advice if you are still concerned?
1. Take out DJI Care refresh while you still can.
2. Always do a pre-flight check before you fly.
3. Fly in beginner mode until you are confident in its ability.
4. Enjoy flying your Mavic.