How do I use low level mouse hooks?

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Windows

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C++14

Hello!
I am making a rapid-fire program, that autoclicks fast when the user holds the Left-mouse button down.

I usually would use GetAsyncKeyState, but since the same detects raw input, it will detect the clicks made by the program, and then continue clicking and never stop.

Example of problem:


Code:

if (GetAsyncKeyState(VK_LBUTTON))
  {
  mouse_event(MOUSEEVENTF_LEFTDOWN, x, y, 0, 0);
  mouse_event(MOUSEEVENTF_LEFTUP, x, y, 0, 0);
  Sleep (10);
  }

I have searched for days, and all threads said for me to use a Low-Level MouseHook, The documentation is very confusing (especially for a beginner).

How could I make this work, could someone give me an example of a mouse hook detecting left mouse to hold and return a true value to a bool variable?

Thanks for reading!

What I have tried:

GetAsyncKeyState will not work, I have tried several ways of implementing it.