Multiple sports absolutely helps. Our PT gave us good advice to look at the leg motion involved. If a sport has a lot of quick stops and cutting, it will cause the same kind of injury. So, you can’t cross train with soccer, basketball, and lacrosse. They are all doing the same thing.
We added swimming and biking, and cut back on the maximum number of hours per day and per week of soccer. That was for knee, not ankle.
Multiple sports is good when they are done in different seasons. But to be a 3 sport athlete while playing all 3 sports at the same time- bad idea.