Without seeing, I'd say it's something with your release point. Your hand needs to stay behind the ball until you're ready to lift and turn. Since it's really hard to tell someone how and when to release the ball, my suggestion is to go to YouTube and watch a couple of the release videos that are there. You may be able to spot something you're either doing wrong, or not doing at all. There's a link for one of them below.
https://youtu.be/7s25PAv4eLk
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