The keys for me are neutral string tension, bringing the hand together to start the swing (looks like you’re good there) and next is a softer swing around the throw hand. I let the string touch the back of my TH before I start a gentle counterclockwise arc with my TH to help open the loop. It looks to me like you’re throwing into the suicide too hard causing your loop to disappear.
We’re not happy until you’re not happy! *<B{Q>