ARDUINO TUNER (SOUND FREQUENCY DETECTOR)

Good afternoon. First of all my apologies in case the topic does not go here. I'm new to the forum and don't control electronics too much.

I need your help. I am making a "sound frequency detector", something like a "guitar tuner" that detects each musical tone.

The operation would be that if my voice emits a DO, I want a red LED to light up; if you issue a RE I want a blue LED to light up; if you issue an MI I want a green LED to light up ...
I don't know where to start ... any help will be welcome.

The videos that I have seen on youtube do not explain code or components.
I have purchased MAX4466 microphones.
I started with the KY38 module but it does not help me, since that only detects hits, I need it to detect if it is a DO, RE, MI ...

Many thanks

Sorry for the block letters in the title :(. I didnt realize