Counter Strike Source private server not found in Lan list

I'm not able to find private servers created by my friend on same network/Lan. I have seen many videos on this fix but i didn't got any solution about my problem.

these are the video examples which i have tried

Solution 1:

I once had the same problem as yours. Go to control panel then open network and sharing centre. From there, click on change adapter settings on the left side of your screen. Then right-click on WiFi adapter and click on properties. Find Internet Protocol Version 4(TCP/IPv4) and open its properties. A new window will open, there click on advanced and then uncheck automatic matric. After that, write 1 in the text field that just ungreyed below. Then save and close every window. That should work for you.

You can also get some help from here