The problem with philosophy in terms of understanding the bigger questions in life is that advanced physics (edit: and neuroscience, chemistry, math/stats, etc) has answered many questions that were previously in the realm of philosophy, and you can’t really understand what’s possible in reality / what constraints there are on abstract philosophy without understanding advanced physics.
Of course the problem with advanced physics is that it takes so much time and effort to learn and understand thoroughly that you often end up as a not great communicator to the average person.
Or, to be cheeky: physics aims to take the largest and most complicated concepts in the universe and explain them in the simplest possible language, and philosophy is the opposite.