You are supposed to deconstruct certain plants to get their oxygen. You have to do it a lot in the early game and that's kind of annoying.
Every now and then when they patch the game they also include an expedition where you do a little storyline with a buffed character. Wish they were permanant but if you keep an eye out they are a good way to kill a weekend.
I'm not that great and the only way I died in NMS was playing with the Plasma launcher, turns out you can blow yourself up. Early game, hit C (I think) a lot to find O2 plants, Sodium, etc. Game runs amazing even on my 8 year old laptop which has an nvidia GPU.
When I played it some three years back, one needed to find usually some oxygen plants and caves for oxygen refills. I bet core play still remains the same. It really isn’t that hard tbh.
running wears out your life support faster, same with jetpacking, that may be why you're running out. sometimes the rng is just not in your favour, though, so you may need to make a new save just to wind up on a different planet, but i've never had to do this more than once, imo it was worse closer to launch when you were dependent on plutonium for launch fuel
