is philosophy always fundamental?

sorry, im a bit confused.. i will research into more though.. but theres a lot of talk in philsophy saying about how it deals with the fundamental questions in life.. but what about things like being skeptical.. ie: if i were to say that our focus is always limited which prohibits us from experincing the amount of thoguhts that it would take to find a higher truth.. i mean that doesnt really sound like a theory people would associate with "fundamental"

People seem to asociate "fundamental" thinking with ethics/politics.. questioning what are things..etc.. but i mean what about proposing doubt (skepticism) of whats apparent? or of not knowing something that we dont see? or can that also be considered fundamental as well? if yuo think that is a fundamental philosphoical theory then..

is there a philosphical concept thats not fundamental? can you think of one..

hmm good question "fundamental"..