Launch app on boot on Android TV 9-12 no root required, auto start app on boot

How to launch app on boot on Android TV? There were a few apps designed for this purpose such as LAUNCH ON BOOT, but they no longer work since Android 10, because it is not allowed by the eco system's policy. Now this is finally made possible without even a root access, check this video.
IMPORTANT: to make this video short, the detailed instruction of ADB usage is refered from this video, please also watch it • Disable/Enable/Change ...
as of 2022/11 I've tested this method on MiBox (Android TV 9), Nvidia Shield TV (Android TV 11), Onn box (Android TV 10), TiVO stream 4k (Android TV 10), Google TV (Android TV 12)

[@-mi]

If you're having trouble finding it in the Google Play Store, try searching with this keyword instead: com.tvdevfactory.sideloadfolder

[@AkarTFT]

Wow I was looking for it for a year! Any way to launch specific website link in full screen with this app?

[@-mi]

Good news, it's possible now, watch ua-cam.com/video/BlcCng_UpIc/v-deo.html