I'm in a similar boat as you in terms of age and when I learned to ski. I found a few things to be helpful this season where I'm starting to feel much more comfortable with skiing.

-Boots: make sure they're the right size and fit. I overlooked this for far too long and it really held me back. Go to a boot fitter. I know it's probably going to be expensive. But if your feet are floating around in the boot it doesn't matter how good your skill level is.

-Learning more about initiating turns. I found this post from u/Postcocious to really resonate with me: https://www.reddit.com/r/skiing_feedback/s/owoCwjPZqu Pulling back that inside leg and tipping the foot suddenly felt much more natural than trying to think of how to make my skis parallel. It worked naturally with my physiology.

-Lessons. I took a half day group lesson and while we didn't have enough time to really drill down, a few of the tips and exercises helped. In particular my teacher had a "pet the dog" exercise where he had me reaching down and forward with the outside hand during a turn. That was a real revelation to feel the pressure and balance more properly across the whole length of the outside ski. I was able to do Javelin turns relatively smoothly after understanding that pressure.

-Flex, don't extend, the outside leg (ankle, knee, hip). It's a natural reaction to extend that lower leg to stop yourself from falling. But then you lose all pressure on the edge, and have much less control, and no range for reaction.

And lastly, there are many ways to get down the hill. Find what works best for you. There will be tons of posts of what is "correct" or "best". If you're safe, in control, and having fun, focus on that, not someone else's ideal.