That's a perfect translation. It is expresses exactly what I tried to state. I will think about how to rephrase it as to make it more digestable for others.

This is not meant as an excuse, just an explanation. I never learnt English in school, only the very basics (Abgangszeugnis Hauptschule Klasse 9). And I am not yet at the point where I perceive a course in formal English (or German) to be a priority. I am concentrating on learning math right now (just started with Calculus a while ago).