Some problems that I encountered when establishing connection through LAN when playing multiplayer games.

Make sure your firewall is off

Turn off your firewall temporarily (in Windows Defender / Anti Virus settings).

Make sure the Internet is set to private

private

Trusting the connection can make others see you on LAN.

Make sure all virtual adapters are disabled

virtual-adapter

With virtual adapters enabled, the game cannot get the LAN we want it to get.

Testing

ipconfig /all
ping 192.168.X.X
netstat -a

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