Why is there no low power mode on iPod Touch 6?

I want to make my iPod‘s battery last longer from normal use... like on an iPhone with low power mode... but it doesn‘t exist in iPod Touch 6...

(I’ve Done everything I have found on the internet to make my battery last longer, from turning off Background app refresh to lowering the screen brightnes,)

i was hoping that one of the developers that works at apple could add it into a future update that would make a low power mode that would make my battery last longer, (stuff like clocking down the cpu‘s and gpu’s clock speed, and maybe even lowering the quality of animation, or maybe even lowering the resolution being displayed on the screen to reduce the power being used....

maybe even options that could give us control of how much power savings we want, maybe reducing the colors my going to 8 bit color instead of the (I think 24 but colors) that the screen shows, maybe even a grayscale that doesn’t render everything in color then filter it into black and white, but actually rendering everythings in a way that makes it save power...