Step 1: Download the script from the link[drive.google.com]
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Step 2: Open the folder with Left 4 Dead 2, to do this, right-click on Left 4 Dead 2 in the Steam library, then select "Properties," then click on "Local files" and click on "View Local Files" there.
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Step 3: Copy the sm_server folder in the downloaded file and paste it into left4dead2 -> cfg
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Step 4: In the Steam library in the lower left corner click "Add Game" there we go to the Steam folder, in my case it is "C: \ Program Files \ steam" there we select the Steam shortcut, then change the name to "Left 4 Dead 2 Autobunnyhop ", or whatever you want.
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5, final step: In the "Location" -applaunch 550 -insecure +plugin_load cfg\sm_server\metamod\bin\server.dll +mm_basedir cfg\sm_server\metamod +sm_basepath cfg\sm_server\sourcemod" (put a space before this).

Now you have 2 shortcuts, Left 4 Dead 2 and Left 4 Dead 2 Autobunnyhop, Left 4 Dead 2 does not change at all, but when you launch the second label, you will not be able to log in to the server, you can only create your own local server, with the same functional as usual (that is, you can play with friends on it), but at the same time you have Auto-Bunnyhop.
I hope this guide has help you, and you have achieved what you wanted, if you have any problems, write in the Comments, and I will try to help you in solving this problem.
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Auto-bannyhop can be disabled by the command in the chat, just write !autobhop
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The copyright and script belong to them: YouTube, Steam Group