How to Appear Offline/Invisible on Steam
To appear offline on Steam, you can change your online status in your Steam profile settings. Here's how:
Open Steam and click on your username in the top right corner of the screen.
From the drop-down menu that appears, select "Settings."
In the Settings window, click on the "Friends" tab.
Under the "Online Status" section, click the drop-down menu and select "Offline."
Click "OK" to save your changes.
After you have changed your online status to "Offline," your friends will no longer be able to see that you are online. They will see your profile as offline, and you will not appear in their friends list.
And if this article about How to Appear Offline/Invisible on Steam hasn't satisfied you yet, you can watch the video below.
That's all from SmashinGeeks, see you in another article. ^^