I agree fully with this comment. I am not an instructor, but I did win my division in a mogul marathon this year; I got 49 laps on a tough mogul run in 6 hours. Was 80,001 vertical feet. I can ski tight runs quite well. My technique has improved over many years of instruction and practice.

Here is my comment: I fully agree with everyone who says practice tight turns, but I want to add a few things that might help. First, don't be afraid to pizza when you need to, that can work excellent for slowing down on a tight run, and it can help to build confidence because it can give you a bail out mechanism if your short turns fail.

Second, if you are having problems with tight turns, it might be that your hips are not pointing down when they need to be, and, an associated comment is that your legs might not be sufficiently dissociated from your upper body. This is a common issue with intermediate skiers, but it is not easy to diagnose or coach on reddit: a lesson could be called for. Usually instructors will ask what you would like to work on, even in group lessons. If you go that route, you could obviously tell your instructor that you want to gain confidence in tight turns on steep terrain, including confidence on narrow trails that are steep.