Cant connect to myself

cant connect to myself,
I cant install anything on this pc so is there any way to connect to myself without 1 of the Citra being installed version?
when I tried this happened.

try connecting directly, Multiplayer > Direct Connect to Room, just put your ipv4, run the command “ipconfig /all” (without quotes) on the command prompt to view it if you don’t know.

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will try it in a while, thanks.