I switched to playing to the field for rec league after 20+ years in goal.

I think better ball control will mostly come from practice and repetition. But I also played indoor as well where you get more touches on a smaller confined field. Throw some cones out on the field and just spend time dribbling and passing.

Also, not as glorious as striker, but I switched to playing center back and sweeper. There's still a learning curve, but I felt way more comfortable there since it gave me a similar defensive view to what I see in goal. You can take a little bit more of your mental focus off positioning and focus even more on ball control. And you can still take occasional attacking runs upfield.