@Gidoru you use your eyes and ears and pay attention when engaging. Every weapon sounds slightly unique, and you can tell at least in general if someone is engaging with a sniper, shotgun, rifle, wingman, etc. If they have a shotgun, you move away. If they have a sniper, you hide and get close.
When you shoot someone, it shows you what armor they have, if any. If I see a white icon show up, I know they can take 150 damage at the most, so a full headshot from the peacekeeper is a 1 shot kill. 13-14 shots with pistols, smgs and rifles.
The reality is in a FUN game, things will not be perfectly fair unless it is a fairly small, compact situation. Apex will never be fair unless everyone drops with the same guns, same armor, and has the same amount of healing gear and grenades. Everyone gets upset about things when they don't work in their favor, and cheers when things DO work in their favor. What is "fair and acceptable" is only a matter of perspective. If you shoot someone with a peacekeeper and they kill you, the peacekeeper doesnt do enough damage. If they shoot you with it and you die, it does too much damage.
I am not saying that I am even great at the game, but I am good enough to not die to the zone and understand how this game layout means you need to move, and you should do it sooner rather than later. The problem with the ring was players didn't care about it, it was a mild inconvenience that made you pop a syringe every now and again, instead of being the restrictive force it was intended to be. Now it is a restrictive force, and you're crying because the thing that is supposed to restrict the playable area actually restricts the playable area.