The biggest part of surviving in PUBG is knowing when to fight – that, and being aware of your surroundings. If someone is firing at you from a distance, you’re better off running to cover instead of trying to fight. On the flip side, there’s absolutely no point in sniping someone using a gun without enough range. An SMG is useless at 200m.
It’s also worth remembering that every shot fired can be heard from quite a long way away, revealing your position. If you have surround-sound headphones or use Windows Sonic and Dolby Atmos for spatial audio, you’ll make the most of them in PUBG as this will help you pinpoint distant gunfire. Of course, the choice of running towards the action or just letting it resolve itself lies ultimately with you.