How to install custom recovery in any android device in English?

In this video , I showed how to install custom recovery in any android device
Links for the files that I used in this video:
ADB and Fastboot files-
Drivers-
Recovery for all MI devices-
NOTE-Unlock your bootloader if it is locked before flashing custom recovery
The above recovery is for Xiaomi devices only. Flashing it in wrong device may cause problems.