The only way I've found is to look up your friend's profile yourself. Ask them what their username is, then replace "namehere" with their actual username in this URL adress: https://gamehag.com/profile/namehere
It will load up their profile and you'll be able to add them.
I found mine using search bar, just write his nickname will be shown up.
in 3 steps
Choose the game that interests you and play itfor free.
Every game has some quests for which you will receive Soul Gems.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
You know that on Gamehag you can get real rewards for free, right? Join us, complete walkthrough and get your chest!
How to find a friend on the site?