do you use 3ds or Wii U?

Wii u but didn't enter it in mii maker

if it is wii u its because aroma does not have the homebrew channel

I tried to install channel file and failed

I can tell you, frist you to go in FBI and to remote install -> Scan QR code and get an QR code of universal updater on google or any URL search bar and type "universal updater QR code" and with FBI scan the QR code.

The reason why it's not working is because the homebrew channel is only on tiramisu. You are using aroma. You can run homebrew apps on the wii u menu without the homebrew channel with aroma. tiramisu cannot, so that is why the homebrew channel is only on tiramisu.

ok but when I install any app such as DLC launcher app it deosn't appear