Sound issues after export

My microphone and the uncut video is okay but after exporting there is a cracking sound in some places … mostly at the beginning or after a cut. Please help me

Does your Video Mode (Resolution/FPS) match your Source Video(s) Resolution/FPS?

I suggest you are a german user?
As @Hudson555x already said that at first to check your sources before setting the videomode.

Feel free to watch my Tuts:

the videos have 240 FPS and 1920x1080 so exactly the same as what I set