PUBG is a 'Battle royale' genre survival game.
You can become the last one standing without having to go through any combat.
Therefore, it could be one option to only participate in required combats and stay away from gun sounds as much as possible.
However, if you avoid combats and hide, you may not be able to take over the good locations and also a very high chance of not being able to equip yourself with high level weapons and etc.
This is because, there's a higher chance of looting higher level items in dangerous areas.
'Dangerous areas' means places like, the cities. Eg. Pochinki, Military base, etc.