Also see a significant problem with your tossing warm up. It looks like you are throwing or chucking the ball up into the air rather than lifting the ball into the air. You want to get the feeling that you are placing the ball rather than launching or catapulting it.
It also appears that you are priming the pump to get the ball up into the air on some of those tosses. Instead, slowly bring the ball down (only once, not a pumping action) so that the back of your left hand touches your left thigh.
From there, lift the arm at a moderate speed. If the arm speed is too slow the ball does not leave your hand. Or barely leaves your hand. If the rising arm moves too fast, your toss ends up being a lot higher than it needs to be. For now, shoot for a moderately high cost that is just a little bit higher than you can reach with your racket (say 20-30 cm or a bit less and then a foot above your racket reach).
Let your arm continue upward after you release the ball. You still need to get that arm up nearly vertical for reasons stated in your previous thread. At some point, in front of your face, open your fingers to release the ball but then let that hand continue upward to follow the released ball. With the arm fully extended upward, you should see the ball rise no more than a few feet (<1 meter) above your outstretched hand.
It looks like you are quickly tacking on a knee bend after you have released the ball. Don't do that. If you are going to bend your knees at all, that knee bend should start to happen before you even release the ball. The only players who wait till after the ball release, have a very high toss -- not recommended. So, as your tossing arm is starting to rise, your body should start to lower -- this is known as contrary motion -- arms move up as the body moves down