Shortyyy Fresh Spawn 2 weeks ago

So first off, how does the inventory system work? My back pack says “25/100′ as in 25 out of 100 slots. But I cant put anymore inside of it. So is that a bug or what? Secondly how do we navigate and know where were at? Ive been wandering aimlessly for the last 2 days. And ive almost died multiple times just because I can’t find water or anything to survive. So that leads me to the 3rd question. Is it supposed to be nearly impossible to find water or equipment anywhere? I remember playing DayZ on PC about 3 years ago. And it was never this hard. Lol Anyways thanks for reading this and if you have any useful info then id be very grateful if you could share some.