These are the kinds of question that philosophers have addressed, many of which are covered on the Open University’s philosophy curriculum.
Some of these questions may have occurred to you already without you necessarily realising that philosophers have offered and defended answers to them. Reflecting on them is a part of being human and alive.
Philosophical questions can also crop up in other academic subjects, from law and psychology to political science and mathematics. Philosophy, however, addresses these topics ‘head on’ rather than in passing, and often adopts a characteristic range of techniques to complement those of other relevant disciplines.