I found this to be a real issue. Native speakers value stuff that I get right with no effort, like getting "its" and "it's" right or usage and spelling of "comp

I found this to be a real issue. Native speakers value stuff that I get right with no effort, like getting "its" and "it's" right or usage and spelling of "complicated words" (most of latin and greek origin). Furthermore, most native speakers (e.g. "current undergraduate college students") have the tendency to write the way the speak (or using complicated words that makes is look like I have control over this language while I obviously don't: excessive colloquialism). I struggle putting the words in the right place, getting articles right, controlling the subtle nuances of tone the make the difference. I have troubles writing less and yet be understood. Please don't say that today your kids don't know their mother tongue, that's not true. They just struggle with adapting to formal language. EDIT: in case you find that in this particular text there are no significant issues, keep in mind that this is after many years of using the language professionally and after one year of living in Ireland.