Where can I find helpfull reference for film making?
Sites like google are not enough to quickly find reference of valuable information on the topics I mentioned above


Oh, my...

You live in a privileged era, never, ever in the history of humankind was the information, examples, tutorials, were so easily available.

Where? the internet.

The problem I see without knowing you, but reading your question is that you are not focusing.


  3d scene with a female character holding a gun in the nighttime


A torrent of questions:

Is the female a girl, a young woman, an old one; Is it a western, a cyberpunk or an android female; do you want to accentuate the female's curves, probably the hips next to the gun, is she defending herself in fear or she is a badass; is it a thriller or a cop story, a drama, a comedy. Is she facing the antagonist or chasing or running away, is it an interior scene, or is in the middle of a forest... etc, etc...


  how to build scenes, composition, and lighting for either 3d animations or filming.


This is even more general... let us forget for now about set design, character design, and storytelling, drama, and rhythm of the scene (all that can be on how to build a scene) and just focus on composition and lighting...

So, look for tutorials on composition, planes, framing, depth of field. What a plane means, what does it say about a character and about the environment.

Now look for tutorials about lighting. Quality of light, the direction of light, the position of light, the color of light.

The keyword is FOCUS on what do you need. Separate the elements.



Focus on real-life tutorials. In a 3D environment is super easy to cheat and not really understanding what is happening.

There are free youtube tutorials of GREAT quality and there are event masterclasses websites with the people you see in the credits of your favorite movies.




Make a new account of youtube, and do not contaminate the search and view history watching memes.
Type a focused and specific search, and let the automatic feed give you recommendations.


One good place to start, for your specific scene is this video: 
                
            



You also have a ton of websites where you can search for movies. Look for a scene that caught your attention, and again, focus on one topic. Framing? light? expression? color?



Focus.



An additional tip, with a bit more experience, you can simply find a reference image and analyze it a bit.

Again separate the elements and find out yourself what do you need, for example:

What...


Lens
Camera position
Camera distance
Light position in relation to the subject
Light position in relation to the camera


How


Many lights are there
Is the quality of the light


etc. Element by element.