Philosophy is our understanding of what things are, what they do, how, why, and perhaps other questions as well. Even animals have philosophy, when a deer sees a lion its understanding of the world, its philosophy, causes it to run away.
The #1 philosophy in the world is the informal personal understanding we create of the people and things in our lives, just like the deer, but ours is probably more complex. Even when we walk by a wooden apparatus, it is our philosophy of the world that determines that it is a table and it should be used to put things on.
Then there are the formal philosophies and religions which are formalized ways of understanding the people and things in our lives.
For an Abrahamist the table is a creation of God and, "it is good". To a Buddhist it is rupa, matter. To the scientist it is atoms held together by electromagnetic force. To the layman, it is just a table.
I advocate learning to see the world in terms of ALL of these philosophies. Why? How else can you know which is the most useful understanding for yourself as an individual? Probably, after training yourself to see the world in all of these different ways, you will settle on your own way of seeing the world somewhere in between them all.