Hi, I am not a teacher, but I can give some grammar and wording suggestions
I would like to ask for correcting given text and putting some comments about structure etc.
Thanks in advance
Have you ever had confusing situation?What do you think about this?
W[w]orld around us is not aperfect. Some situation when we are really mixed up, earlier or later come up. [this sentence is unclear - I think you mean to say sooner or later, situations in which we are really mixed up will occur] Often, confusing situation[s] appear[arise] because of misunderstanding[s] or [a] lack of needed[necessary] information. This happens not only because of malice, but mostly [due to] bad communication.
I experienced [a] confusing situation. It was during the study[this is unclear - do you mean during school?]. We had to choose one of many additional subject[s] [in which] to enroll. We had [a] points system
,and we had to choose as many subject[s] [needed] to reach [the] prescribed amount of points. Each subject had it own place[enrollment] limit, so everyone rushed to enroll. I was taking into consideration[considering] mainly English language course[s]. I was really happy and content edafter I managed to enroll [in]my chosen course.
Unfortunately my happiness was not
taking long[long lasting], because I found out we shouldn't enroll to[in a] subject which we chose[taken] during the previous semester. I had to change [my] subject, [new sentence]unwillingly[,] I moved[switched] to [a]German language course. I was a little bit upset and [felt] disorganized. Then it turned out [that] we could continue the same subject in the next semester, and [that] the previous information was incorrect. I was really angry and confused, everything was unclear. Hopefully[Thankfully, fortunately, luckily - hopefully is for something you hope to do in the future, not something you already did] in the end I managed to change back to [an] English course.
[This[ Whole situation cost me lots of
nervous[stress] and time which I wasted[wasted time]. If the right information was[had been] given in the beginning there was no[would not have been] any problems and misunderstandings.