Philosophy is composed of two root words, philo and soph. Philo means “love of” and soph means “knowledge” or “knowing”. Put them together and at its core philosophy is the love of knowledge.

In ancient Greece philosophers were contrasted with the sophists, those who proclaimed to know things without respecting whether they knew the correct things. As the roots of modern science began to take shape proto-scientists were referred to as natural philosophers with a love for knowing about the natural world. When universities began offering doctorates, they were named to have a doctorate in philosophy of (phd) their subject to declare a recipient had shown a love of knowledge in their field of study.

If you are trying to learn for the love of the game, you are practicing philosophy. Any attempt to add onto that I can think of just dilutes that or starts breaking to into different fields within philosophy as a whole.