If you are not sure on how to install a apk into your device you will need to youtube it.
For example "how to install apk on firestick using downloader"
Use the following downloader links below to install the app of your choice.
Creed smarters - https://bit.ly/Creedtv
Falcon xciptv - https://bit.ly/creed_XC
Falcon perfect player -https://bit.ly/CreedPlayer
FalconIPTV: https://bit.ly/falconip
Or use the following downloader codes
smarters - 563777
xciptv - 552161
perfect player -305409
falcon - 340151