D.r.o.w.z.y it should save. Did you try checking video settings? I'm fairly sure you don't need console commands

Video settings I believe or use console commands

Go in the bootstrapper command prompt (the console opened when you start the game), or the in-game console
and paste this r_fullscreen 0;r_noborder 1;vid_ypos 0;vid_xpos 0;vid_restart then press Enter

Using a software to mess with the game's memory while NOT in LAN mode can get you banned
Everything else will not get you banned
You don't need to use an injector to load scripts, Plutonium has a built-in GSC tool
https://plutonium.pw/docs/modding/loading-mods/
https://plutonium.pw/docs/modding/loading-textures/

2 unknown bad antivirus showing generic detections, no
You should probably not even run VirusTotal scans if you're unable to read them
An actual malware could have 0 detections and a safe app could have several, even dozens of detections

https://store.steampowered.com/dlc/202970/Call_of_Duty_Black_Ops_II/

https://store.steampowered.com/dlc/42700/Call_of_Duty_Black_Ops/

death V2 like any other script yes, but obviously you have to be the host to load your own scripts

erfanm4971 install DirectX

D.r.o.w.z.y is it going out of the screen?
If yes then this might help
https://plutonium.pw/docs/fix-game-zoomed-in/

Otherwise this (tutorial written for something else, dvar should be r_mode)

Change your video settings without crashing the game (borderless windowed)
Make sure your game is closed before doing that.
Go to %localappdata%\Plutonium\storage\t4\players
Open the config file with the notepad to edit it.
plutonium.cfg is for singleplayer/zombies and plutonium_mp.cfg is for multiplayer
Change these 4 dvars to be like below (you can use ctrl+f to search for them)

seta r_fullscreen "0"
seta r_noborder "1"
seta vid_xpos "0"
seta vid_ypos "0"

You should always play WAW in windowed borderless to avoid alt tab crashes and vid_restart crashes

Installe DirectX
https://www.microsoft.com/en-us/download/details.aspx?id=35

Make sure your game is in windowed borderless

You cannot switch modes like this. Use the launcher. Also campaign is not available

While not in LAN mode yes

Maybe you have Steam opened in the background
Try fully exiting it

Unbanned you

I'll take a look at it with admins and get back to you

xifeu what's your antivirus?

sharkboyyy300 something on your side crashes the process (driver, software, plugged in device, overlay etc)

Not really sure what the issue is exactly etc

Could be your antivirus or some security software whatever blocking something