Translation of polite in German

After breakfast we visited one of the largest markets in the country. It was very close to the hotel and we were tempted to buy souvernirs and other stuff that we would never use ever again.
Hey. You are online! Pollution means that the air is filthy and that it is hard to breathe. I'm getting much better at German, so please correct me when I am wrong in my language. You're English is actually great.
Your correction, the vocabulary builder and the verb conjugation exercises are my best practice to learn Italian. Anyway should you need my advice or my assistance in language learning, I am here.