The chief problem with the essay as a whole is that it is in one big paragraph. That makes it difficult to read. I suspect that, as you try to break the essay into paragraphs, you will discover its structural weaknesses.
Here are a few specific fixes you can make while breaking the essay into paragraphs:
My goal is to obtain the chance to engage in these programmes in English.
What programs? The word "these" suggests that you are referring back to something you've said before. But, since this is your first sentence, what "these" programmes might be is unclear.
And here is what I think about importance of fluent English in the contemporary world.
It is so rarely appropriate to start a sentence with "and" that it's probably best to avoid doing so altogether.
"Currently I reside in Sweden
, where
the English level among
its inhabitants is quite impressive."
"The
majority of Swedish people would never use
a dictionary or phrasebook..."
I notice, in general, that you often omit articles (a, an, the), so get into the habit of proofreading for that.