hi guys how can i get IOS 8 on my ipod touch 4th gen plz help cant download any apps with IOS 6 on it

To my knowledge Apple has stopped signing iOS 8 so there’s no way you could download and restore to that.

I think they made older generation ipods incompatible with newer ios versions

4th gen iPod touch isn’t supported on ios 8 so it isn’t possible. You can go to 7 but you probably won’t gain much.