Hit a plateau in my learning - looking for general advice

Hi all! I started surfing just about 3 months ago and I absolutely love it. I started on a 6ft, 42 liter foam board, which definitely stunted my learning as opposed to learning on a longer board (borrowing a friends board).
Over the months, I've been steadily improving and am now at the point where I can identify peaks and get into waves consistently on a 5'10", 32 liter board (I am 5'8" 165). However, I've been having a lot of trouble learning to turn down the line and ride the face of the wave. Some of it is definitely related to unstable pop ups, but lately I've been wondering if there are any techniques that I'm missing since I've been stuck in this stage for a while. I've just been trying to learn by watching other surfers.
Below are some crappy surf cam videos of times where I definitely had an opportunity to go down the line. Any help would be appreciated
https://streamable.com/pkgfk1
https://streamable.com/ph6md0
https://streamable.com/62pgtt
Over the months, I've been steadily improving and am now at the point where I can identify peaks and get into waves consistently on a 5'10", 32 liter board (I am 5'8" 165). However, I've been having a lot of trouble learning to turn down the line and ride the face of the wave. Some of it is definitely related to unstable pop ups, but lately I've been wondering if there are any techniques that I'm missing since I've been stuck in this stage for a while. I've just been trying to learn by watching other surfers.
Below are some crappy surf cam videos of times where I definitely had an opportunity to go down the line. Any help would be appreciated
https://streamable.com/pkgfk1
https://streamable.com/ph6md0
https://streamable.com/62pgtt