Some video of your surfing would help, but here's some ideas.
The Oreo technique is tricky, you need to be able to spot where the wave is starting to draw up and recognise that the wave is going to peel with a good shoulder, rather than just closing out.
This needs a lot of practice (trust me, I know!)
Possibly trying a longer board with more volume might help, is there anywhere local to rent them?
Alternatively, chat with people in the line up and see what they are riding, so maybe you could swap with them for a few waves?
Commented on Hey friends! Went to the surf pool an...
15 Apr 23:46
You take off well, but then your legs are stiff and you're bending from the waist with your hands and head down.
Have a look at the Bosu ball Neutral Stance drills and maybe get a surf skate to practice stacking on the front foot and keeping your elbows up and your shoulders back so you can compress on the front leg with your back straight 🙂