Oral English should be put at the first place

Oral English is the most important English skill. OR Oral English skills are more important than reading, writing or comprehension skills.

These day i have job interviews.

These days I have job interviews.

However, the employees employers prefer those who can speak English fluently.

I have been upset for that i am not good at oral english.

I have been upset because I am not good at oral English.

I have been upset about that because I am not good at oral English.