This post is for those who are using Debian/Ubuntu/Kali and need to enable wireless using Realtek RTL8821CE network controller.
First of all check your wireless controller:
lspci | grep -i wireless
You should get something like (it means this post will be useful for you):
01:00.0 Network Controller: Realtek Semiconductor Co. RTL8821CE
Before beginning, update your system and install git if you don’t have it yet: