Moving beam left or right

Hello everyone, this is Andy.
It happens every time...
It's obvious in the example attached.
I'm trying to write a piece by Ravel but, as you can see in bar one, the notes are jammed. I tried to fix the problem in bar two by moving left some notes but it is impossible to move left or right the beam. This happens in both Musescore versions, 3 & 4.
Am I doing something wrong?
Please help!