I am new to Zorin, Had trouble with Brave too with Unable to search on Web also. But got to Install Firefox and now Need Help is there potential issue with some Applications?
Welcome to the Forum!
Did You tried it with a Reboot? Maybe something hangs and a Reboot could help.
And are Brave and Steam installed as APT Packages, Flatpaks or Snaps?
Also is your Firefox installed as apt, Flatpak, or Snap?
Do you have internet access? Are you using ethernet cable to your router, as I cannot see any WiFi icon on your screenshots.
Yes I am using Wired as the Laptop's Wifi Card is too slow.
And Yes Steam I have installed directly from Software App and Brave I have followed the Brave Installation Documentation from their Website. Adding the Keys and then installing via
sudo apt install brave-browser
Firefox is also installed via apt
Thank You for the Help. But Got it Resolved. It was because of Join Displays Preference which is Enabled by Default. Even though I have not Connected another Display.
After making it a Single Display it worked. 
On rare occasions when I've had drivers in a bad state, the computer's thought I have two monitors when only one was working, or one that was the size of both of my monitors. If things are working well, great, enjoy--but if you have any future display weirdness, you may want to check your drivers first thing.
If your post #5 is the confirmed fix, can please you mark that post as 
Solution
