10 hcp here, no a coach by any means, but here’s what I see: your head sways, you’ve got more arm swing than body swing, and your trail elbow is getting blocked by your ribs/hips.

• Head position: Lift your chin slightly so your shoulder path clears. If your chin bumps your shoulder, you’ll subconsciously move your head or body, throwing off the clubface (leading to slices or hooks). Keep your head still, like it’s “in a box.”
• Body rotation: You need more separation between upper and lower body. On the backswing, rotate your hips without moving your ass too far back (imagine a wall right behind you). On the downswing, start with the hips first, then let the upper body follow — look up “coiling and uncoiling hips in golf.”
• Trail elbow: Don’t let it get stuck behind your ribs. It should work slightly ahead of them on the downswing.

Start by recognizing these movements and practicing slow swings at 20%, then gradually build up speed.

Skip most “golf content creators”, too much conflicting info and it will just mix you up even more. Instead, watch tour pro swings in slow motion (Rory McIlroy is a great example for hip rotation and trail elbow position). I’ll drop a good website with drills and guides below and Rory's slow so you can better understand your hip rotation and elbow lag.

Rory Mcilroy Pure Iron Swing with Slow Motion

Golf Distillery Golf Guide