For Korean translation from/to English (and other languages it offers), you should use Papago or 파파고. Google Translate is obsolete for years now. Papago is 99% of the time correct. Ensure that the English grammar is correct, e.g. capitalise and period at the end of the sentence. : Korean
Korean Translation
Is Papago a reliable translating app? : Korean
12 Ways to Say Thank You and You’re Welcome in Korean
Casual Korean is never used between adults who are strangers, even if there is a significant age gap between you.
You might come off as rude.
Moderators will not respond to any direct 1:1 chats or personal messages.
I use Google Translate when I get stuck writing to my French family and friends in French.
But in modern times such as ours, English has certain advances for learners chief one of them having colossal literature available in all streams of learning such as natural science, social science, liberal arts, fiction and lot more.
In the Korean language, speech levels exist.