Being killed instantly by one-taps

Product: Battlefield V
Platform:Microsoft XBOX One
Please specify your platform model. Microsoft Xbox One S
Are you using any software with an overlay? No
Which part of the game is the issue happening in? Multiplayer
Which part of the mode? Conquest
Please select your region Australia
On which server did this happen?
When did this happen? (dd.mm.yy hh:mm) Current
Summarize your bug I am finding that every single game I play, other players are able to "one-tap" kill me, however, when I shoot enemy players I have to put at least a few bullets into them. Please get back to me because this is extremely frustrating as it makes most encounters impossible to get past. I am instantly dying and it takes me ages to kill other players. This happens every day, in every game. This is not due to being killed with headshots. This seems like a hit-registration or lagging issue which I am unsure on how to correct. Please help...
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? This issue is player specific.
What happens when the bug occurs? I die instantly. This makes playing the game extremely frustrating and demotivating.
What should be happening instead? I want to be able to play the game the same as everybody else.

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I have been playing Battlefield for a while now and I have noticed quite frequently that I am dying extremely quickly by every weapon, this is EXCLUDING headshot deaths. When I encounter enemies, I find that I have to put a few bullets into their chest to kill them. This seems like a normal and balanced amount, however, it's not the same when they shoot me.

I think this is a hit-registration and / or lagging issue.

I am unsure on how to fix or correct this. This simple issue makes playing the game extremely frustrating and near impossible to reduce deaths.

Any help would be appreciated.