Both phrases are correct and their meanings are the same. Which one to use ends up being a matter of personal preference. For practical purposes, if you want to use one and are trying to decide which one to use, pick the one that is the easiest and most comfortable for you to say. ex) an employee wants to make a lateral transfer to a different department at work. The manager signs off on the paperwork to consent to the transfer but tells the employee that the transfer involves a pay cut! The employee is upset. He shakes his fist in the air and yells "this shouldn't have to happen! It's the same job but on a different floor! Why do I have to take a pay cut! This shouldn't happen to me-- I've worked so hard!!!" ;)

'The vibe was good there' is an excellent alternative to 'the atmosphere was good there.' It's perfectly natural :)

In your example, 'all' does not mean 'totally' or 'completely'. Here, 'all' is 모두 다. As for your 2nd question, you should say 'in sentences like these, can the word 'all' mean 'totally' or 'completely.' Hope this helps :)

You used 'represent' correctly. All 3 of your sentences are correct :)

I find that Talktomeinkorean.com is a helpful website when I study. :)

Italki is a platform for language learning largely via paid classes with tutors or professional instructors. I'm afraid there isn't much here by way of free downloadables unless it's something a specific teacher provides to you during the course of a paid class. Hope this helps

In this example, 'but' means 'only: When John became king, he was 'only' 32 years old. (The use of the word 'but' is from what we call 'old English.' You will see this mostly in written English or on tv. In conversation, we would use the word 'only)

This one is a bit easier. You can use this: ' to cork/uncork a wine bottle. When I corked the wine bottle, it went in too far. When I corked the wine bottle, it slid in too far and now I can't get it back out!