Like others have said, post. It's not embarrassing. You've seemingly been getting some bad advice from an instructor, as nobody should really get worse or at least worst AND confused as to why they're worse.
And, if you're more fatalistic, you've got nothing to lose.
You have a very good swing. The thing I see is you take the club back a little under plane and get your hands too far behind your body. Your downswing is on a good plane, but I think you’ll see more consistency in your ballstriking if your backswing plane was closer to your downswing plane.