On the Fleck/Lo Celso incident, the only person that really knows if it should have been a send off is Fleck himself. His foot has to go somewhere, Lo Celso was already rolling around on the ground.
Could he have done more to avoid it, probably yes, but intent has to be proven and it can't be in that instance in my view. Judgement call by the referee and VAR that it was incidental rather than violent conduct, I can live with that.
The intent is clear and very obvious - Fleck even had to change the direction of his leg and foot in order to bring it down onto Lo Celso's shoulder and face (you can see him bring his leg around)