Hi sir , Hope you doing well
I`m a professional and have 10 years experience in editing video and advertisements
*At first, if you want to remove the hands and show the split of pretzels
the hands should wear a green gloves also .
*second , there is a flicker light because of the slow motion witch you used with your I Phone
you should use a professional camera with a high frame rate like 90 or 120 f
*Third , use different angles (not from above only)
I will try to do my best to do something with these footage.