Can we use the word 'embarrassed' to describe a panicked situation?

Many Korean tend to use that word to describe it, but its real usage is totally different from the meaning of that in a Kor-En dictionary.

Firstly, embarrassment is not equal to panic. Rather than using the word like that, lots of native speakers use this word in shameful or humiliating situations (edit: "...use this word in situations they felt ashamed or humiliated"). Some examples are as follows:
1. The teacher suddenly asked me a question and I'm embarrassed. (X)
2. A cockroach is considered an embarrassing insect to many girls (X)
3. When I heard laughing in scorn to my presentation, I really felt embarrassed. (O)

So, in this situation, it is better to use 3 alternatives: panic, not know what to do, and freak out. First, even though some Koreans are worried about saying the word 'panic' because they usually say it in a very serious situation, but the native speakers say the word 'panic' in not serious situations naturally. Second, we can use the phrase 'not know what to do', too. It's the easiest and most frequently used phrase to describe a panicked situation. Because we can easily substitute the verb 'do' with other verbs, such as speak, say, answer, and so on, it's very useful for us to put into information to explain it. Last, the phrasal verb 'freak out' is used in the toughest situation and only the most panicked situations. It could be easily translated in Korean word 'Menbung멘붕(it's a acronym to describe really shocked and desperate situations)'. So, many Korean would be able to memorize it easily, too. The examples including those words are as follows.

1. The sign says like that - Don't Panic!
2. He asked where is the estimate I should have prepared, I didn't know what to say.
3. When I realized that there are no clothes to wear because I didn't do a laundry yesterday, I felt totally freaked out.