Nice work on the balls!! The only one that needs TINY adjustments is the light one on the right side.
The overall feeling of it is that the ball sticks to the ground a bit before bouncing off. So during the first hit, I would delete the frames 25 and 27, 28 and 30. On the second bounce I'd take away x51 and x56.
Should be a quick fix. I would move on to another animation clip and while you work on that one, fix the ball.
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