When it comes to learning a coop PvE game akin to DT etc, you learn skills at different rates or even one after another.
I’d wager most people find it easter to focus on what they are doing and learn all the “me-related” skills first before they learn the “us-related” skills.
If you’re having to dedicated a lot of your mental processing on how to move, attack and dodge, you’re going to neglect things like: keeping track of specials, target prio, using the resources you find on the right person at the right time etc.
The mechanical side of the game needs to be 2nd nature to you before you can focus on what you should be doing instead of how you’re doing it.
A lot of players I see playing this game as if it’s a solo experience with 3 randoms in the same match have developping mechanical skills and no meta-game skills.
Some of these skills can take a really long time to learn when you don’t ask yourself the right questions like: should I be the one using that heal or should someone else get it?
Most never even get that far or don’t care to ask themselfs questions like that.