"While I'm in Korea, I want to speak only Korean" How to say "While I'm in Korea, I want to speak only Korean" in Korean.

"I want to practice Korean. Please talk to me." How to say "I want to practice Korean. Please talk to me" in Korean?

How to say "You can use 반말" in Korean If somebody is speaking in 존댓말 with me but I want them to be casual and use 반말 what should I say? Something like "You can use 반말" or "Let's use 반말" or "It is okay to use 반말?" How would I say this in Korean?

First entry 이거 처음 일기 내용이에요. 어려워는대 진짜 도움이 많이 돼요. 한국에 가는게 너무 기다려져요. 내일 아침에 연습할거예요..

First time, Second time, This time, Last time, Next time, in Korean How to say "first time" "second time" "this time" "last time" "next time" in Korean. Examples: "This is my second time in Korea." "This is my first time drinking soju." "I will try hard this time." "Last time I was in Korea, I had fun." "Next time, I will eat 삼겹살."