What is this Icon Network Connection?

This Icon Appear In My Pc (Ubuntu 20.04) And Now My Wifi Connection Doesn't Work,Someone Know How Fix it?

1. This icon means that your route settings preffer the ethernet connection on other connections.
   • If there is no ethernet cable connected to your computer and you computer still trying to use that connection check those options:
   • static ethernet connection is set up, check it by clicking on ethernet icon->"edit connections"->if there is ethernet static connection delete him.
   • now reboot your computer and check if wifi is working.
   • if it is not working try step 2.
2. Execute the command ifconfig and look for your eth connection, it should be named as eth0 or enp0s3.
3. Now execute the command route -n.
   • now look for your ethernet connection name under Use Iface.
   • check for your ethernet connection metric numeric value.
   • The interface with lower metric is preferred for Internet.
4. If the ethernet connection have the lowest metric value you can change it with ifmetric command.
   • install the ifmetric with sudo apt update and sudo apt install ifmetric.
   • execute the command ifmetric ethInterfaceName numericValue
   • for example ifmetric eth0 1000
   • or just give a better priority to your wifi interface
   • for example ifmetric wlan0 0.
5. If that is working you can reboot the computer to check that is stable.
   • if it is not stable you can use crontab -e to run this command as a scheduled task.

if this solution not working please specify your problem by posting the commands output as and edit to your question so i could help you solve the problem.