Overwhelmed Welcome to the site! You're asking an important set of questions, and what I say won't answer them directly so much as maybe help relieve the pressure that your questions have.
I'll start by saying that I used to approach philosophy much like you say here - a kind of desperate desire to 'know it all', to find the 'right way' that would settle all the questions and, as you say, find the 'pure, unbridled truth' of things. But if you study philosophy long enough, one of the things you learn - hopefully! - is that the world - or 'reality' - is interesting precisely because there's always 'more' of it. There's always something new, something novel that will challenge and call for your thought to be engaged: for you to put your noggin to work, as it were.
And what philosophy will teach you - if you can persevere long enough to get there - is a set of approaches to the world. A bunch of tools or lenses which you can put on and swap out when the need arises. And if you're really good, you might even be able to invent a couple of such tools for yourself. This is what all the best philosophers have done. Philosophy is meant to be put to work with the world, much like a hammer to a nail (one 'philosophizes with a hammer' as Nietzsche said).
Of course, the more you read, the more you study, and the more you write and talk, the more you'll refine those approaches. You'll learn not 'answers', necessarily, but - what is in my opinion far more important - how to ask the right questions, how to discover what is and is not significant about a problem. Philosophy is an art of questions (what Socrates called the 'dialectic'). And it's incredibly hard to ask good questions. So we devote an entire discipline to it: philosophy. When you start discriminating between questions, saying 'that's not a good one' or 'that's a good one', then you'll start to think like a philosopher. And this will prepare you for whatever you may come across, in all the world's diversity, so that you might think: a more fulfilling adventure than arriving at some static end-point of understanding.