Ground turkey products are usually right beside the chicken products. If you don't see them, ask someone that works there because they'll almost certainly have it
Ground turkey can be leaner, but make sure you check the label because it isn't always so. If it has a lot of dark meat then it will have a higher fat percentage. They frequently add skin and fats to it so it isn't too dry when you cook it, so you'll need to check the percentage of fat it contains. You'll probably want to look for ground turkey
breast and not simply ground turkey. The label should provide plenty of info