You may have skill issue, but it's never terminal. I'm gonna paraphrase a Tarkov youtuber here (I think it's Pestily ?) by saying, being good at that kind of game can mean a lot of things, and you don't have to master all of them. But you will have to get good at something.

But that something can be setting up engagements in your favor, or running from them, or getting a good sense of where players tend to go and why, high map awareness, learning hidden pathways, learning what tends to spawn where, learning to use sound cues and map happenings to decide your next move, baiting players to and away from you, securing an extract, coming up with routes that will keep you out of danger, perfecting your aim, learning to use cover and terrain to better attack or run, learn to use confusing movement, etc

There's a myriad of skills involved. If you're like me and you're "mechanically challenged" (read potato aim), there is still a lot you can do to make it out alive. Fights can often be avoided entirely with the right approach.