You are commiting category error. "Why are we here/why does anything exist" implicitly assumes an impetus, a do-er with motivations. And "what IS this reality" contains it's own answer(and the refusal to accept it): It is 'this reality'. It is IS-ness itself. It's like saying "Perfectly describe the entirety of Moby Dick, leaving out not a single word or punctuation", and refusing when someone hands you the book.

Buddhism, Yoga, the more esoteric parts of the Abrahamic religions and many more all have you covered with an extensive corpus if you want people who are asking the same questions you are.