Injection Failure

So i have a Rust hack which is a DLL file (obviously) and it works perfectly, i used it quiet for a while since i reinstalled the windows 10, before that when i had Windows 7 it didn't work at all and now the same problem happening as it happened before, the error and the game crash i get is when i try to inject the hack using the Latest version of Extreme Injector which is v3.7.3 and i get the following message :
"An error occured when injecting "Rust_Hack.dll" into "RustClient.exe".
System.Exception: The injection method used returned NULL (injection failed)."
Knowing that i :
1) Uninstalled and Reinstalled all the Visual C++ from 2005 to 2019 both x86 and x64 and yet nothing changed.
2) Uninstalled Visual Basic 2017.
3) Installed all the windows updates.
4) tried other injection methodes (used Xenos injector).

and yet nothing...

im really dissapointed right now since i tried anything (literally ANYTHING) to fix it up but no chance, i'd like to get some help from the Experienced guys here in the forum and i would be much grateful.
i will try to upload a screenshot so you can see.
hope will get some good help and thank you.

If the cheat is a mono dll, you will not be able to inject it with a normal injector, you will need a mono dll injector which you can find on the internet, i would advise you using MInjector or SharpMonoInjector (google it and you'll find)