Try to avoid getting scammed. Watch youtube videos and read guides about type of scams. Back then, I got scammed by the usual 'Valve admin' method (atleast my backpack was worth a few ref).

A video you should watch:

https://www.youtube.com/watch?v=J2gnPaitYc8

A guide you should read:

https://steamcommunity.com/sharedfiles/filedetails/?id=1261293152

Don't fall for these type of scams.