“Give me a place to stand on, and I will move the Earth.”
Archimedes
He could do this by leverage.
You can also get better faster using the leverage of tools and help from other musicians.
A metronome, tuner, method book, can all make you get better if they are the right tools and you use them correctly.
Just listening to recordings can teach you a lot if you really listen.
So can recording yourself and finding things that you want to improve in your own playing.
Another way is to take lessons and use what your teacher says, if they’re good lessons. Then you’re leveraging all the time they have spent learning the saxophone.
A scientist doesn’t build all his or her machines and come up with equations and theories from scratch. Einstein, Newton, Galileo, and almost anyone you can think of took the foundations of science and added to it.
You can learn sax by yourself, but tools and other people can help you learn faster.