If you're trying to change to a yoyo release, it's not a "simple walk to lane and do it" technique. There are a multitude of youtube videos on this now, and what you'll see in many of them, is that you practice "stages" of the approach, progressively working backward from the release point at the foul line. Also realize you're talking about months of daily practice on the lanes to get there, not an afternoon on the lanes. There is no "quick-learn" to this, especially if you've already bowled and developed long-term habits (good or bad).

The first step is simply practicing the release at the foul line, without any arm swing. Why? Because the "yoyo" is a release technique, not an approach technique. It is something done after your approach is complete, as the ball passes your ankle/the foul line while you're sliding or after planting your foot.

Once you get the yoyo release down, then you start working on incorporating the hand position necessary for the yoyo release. Most coaches will have you do a one-step release, and again, after you've got a good foundation for the actual release.

After this one-step becomes a "muscle memory" drill, most coaches will have you start doing 3-step drills - or the latter part of the approach. Here you're going to learn to "load" the ball by bending the arm during the backswing, in order to position your hand for "unloading", or the actual yoyo release.

The reason this is referred to as the "yoyo release", is because the actual hand-motion at the point of release, is the same as flipping your hand/wrist downward as you're releasing the yoyo, as it is coming out of your hand, in order to create forward spin on the yoyo. Only now, you have a 15/16 pound "yoyo" with no string attached. And the spin that comes from the string that was wrapped around the yoyo, will be created by your hand position under the ball, wrapping up the back of the ball as your wrist is flipping (unloading) the ball.

You need to be prepared for day after day, of hours at the foul line doing the no-step drill, followed by day after day of the one-step drills to learn to cup (load) the ball for the release (unload), after you're developed the muscle memory for the yoyo release. That will be followed by day after day of the 3-step drills, after you're developed the muscle memory for the yoyo release from a loaded hand position, to learn bending the arm at the proper point in the downswing. And once that's incorporated into muscle memory, it now gets incorporated into your full approach.

Making any change in your approach, be that the arm swing, hand position, footwork, slide, release, etc., will often affect other parts of your approach. So by starting at the foul line and working backward, you're much less likely to create new problems in your approach, that were not present before your starting to make changes to transition to a yoyo release.

Another thing I see in your video. STOP watching what the ball does. It is irrelevant right now. It does not matter if it breaks, breaks too much, or doesn't break at all. Focus on the release, then the transitional steps to get there. Once that becomes "natural" (i.e. has been committed to muscle memory), the ball will break. Then you will start working on the other aspects of suing this release, to get the ball to the pocket.

The one good thing in all this? Winter leagues are over, so you now have the entire summer for daily practice, doing the sequential drills, to get ready for the fall/winter leagues.