How to add apps on my apple tv

- How to add apps to my apple tv box
- How to add more apps to my apple tv
- How to add apps to my old apple.tv
- How do i add apps to my apple tv device
- How do i add apps to my apple tv box
- How can i add apps to my apple tv
- How do i add apps to my apple tv 3rd generation
- How do i add apps to my apple tv 4k