How can you earn amazing CSGO skins for free?

I have heard players saying that there are many great ways to earn CSGO skins on the internet . However, according to me, I would look upto IDLE EMPIRE to earn skins . What about you? Do you know of any other better way to earn skins at Counter-Strike: Global Offensive?

Over here. On gamehag. Or go to other websites that give steam wallet codes like swagbucks or rabuken etc. Theyre are tons of sites if you want.

Just play the game when new cases drop and hope you get one