why how good you're, is not on your control

It isn't in your control, because being good at competitive X thing, it is all about proving that
Y percentile of community is just inferior at what thing you're doing. In order to be good at X thing, you have to prove that Y percentile of the community is just worse. how good you are purely depends on that community's skill level rather than yours. How skilled you are is relative to only that community. But let's say here are parameters with which you have control, like training or solving puzzles, etc., and assume there are no parameters that cannot be changed, like genetics. You're fundamentally relying on a fact; they won't try to improve those parameters.

You need a translator or a grammar class. Because trying to read what you've typed is actually painful to the brain.

It's not explicitly in our control because we can't just decide to be grandmaster-level good just because we want it. However, how good you are depends on you. How adaptive your mind is, how strong your memory is and how sharp your intuition/reasoning is.

I don't think. it would be a issue, if my ideas inself, where easy to explain.
or I just suck at writing

In the end, while your rank or percentile depends on the community, your journey of improvement is fully in your control—and arguably, that’s the part that matters most.

Rating does depend on being in a population of players and so could be considered as being relative to the community. On the other hand, from GMs and computers we have a really good understanding of what the best chess in the world is, and we can compare ourselves to that through games and analysis.