View attachment 139087
Not to be critical and approaching this as a fellow forum member, this looks like a conventional face cut that's
too deep, a
sloping back cut,
no holding wood on one side as the hinge was cut through, and
loss of control during the fall.
From a "let's learn from this" perspective and not seeing the whole situation, maybe the face could have been rotated 45° counter-clockwise toward the lean of the tree at a depth of 1/4 to 1/3 the diameter of the tree, allowing room for a horizontal back-cut 2" above the horizontal part of the face cut, likely resulting in a more controlled fall due to having holding wood.
With that said, cedar is very dense and tends to break off rather than pull cleanly through the fall, so there are several advanced techniques like a Gapped Face Cut (sometimes called a "blocked face cut") that can help the hinge retain holding wood though more of the fall.
If there's anything I've learned it's the Internet is full of arm-chair experts and tree felling is bound to draw out some pretty strong (and often wrong) opinions, and it's not my goal to be in that category. I wasn't there, and even if I were I don't consider myself an expert, especially with cherry and cedar.