This post is from a low-reputation account and contains an unverified outbound link. Be cautious before clicking external links.
If searching for your friend's username in the steemit search box does not work, there is another way for you to find them.
Type www.steemit.com/@yourfriendsusername into your brower's address bar.
For example -- www.steemit.com/@denasozio
You should be good to go!