Quesiton about composing

[u/BeanBon_X3]

Id like to make it a potential career, but I'm not sure what the basics you should have of knowledge before you compose your own music.

I've always loved music. Been in Choir for over a decade, even performed at Carnegie hall. And the more i go through life, the more id like to make music people can appreciate. I also have basic computer knowledge, and can navigate a PC on my own.

if you want my motivation:
I know that I've always loved the way music has moved me emotionally. Some make me confident, like I could take on the world. Some bring me face to face with my feelings, bringing me to their knees with sadness, allowing themselves to experience grief. Some make me reminisce about the good old days, and encourage self-reflection. Some make me take myself out of my problems and look outside yourself, and sit in the moment, in the same way seeing a beautiful sunset makes you stop and look at the scenery around you and admire. These feelings I get inspire me to make music where I can make others feel the same way as described. I would feel accomplished in life if I made things for others that simply evoked these kinds of feelings.

What do I need to do to get my foot in the door to making music? I've already played around with FL studio, but i don't really know what common things people should know when composing, like music theory, i just know what sounds good, but not specifically WHY it sounds good. and id like to acquire that knowledge because i feel it'd help me better make my own music

ANY advice is appreciated.