I'm freshman of this site! I'm freshman of this site!

”Freshmen" is unusual phrasing, but passible. I feel more natural might be "I'm new here."

I'm freshman ofnew to this site! I'm new to this site!

I'm freshman ofnew to this site! I'm new to this site!

I will probably saytalk about my daily life or other interested things. I will probably talk about my daily life or other interested things.

say: produce words talk: produce meaning (ideas, experiences, observations)

I will probably saywrite things about my daily life or other interested thingsthings of interest here. I will probably write things about my daily life or other things of interest here.

I will probably saytalk about my daily life or other interesteding things. I will probably talk about my daily life or other interesting things.

I have to livemove to America afterin nine months after, but I am just beginner ofin English. I have to move to America in nine months, but I am just beginner in English.

The "have to" was a little unclear, but I assumed you meant you are currently living elsewhere and will after nine months be living in the US.

I haveam going to live in America afterin nine months after, but I am still just a beginner of English. I am going to live in America in nine months, but I am still just a beginner of English.

You haven't been here yet, correct?

I have'm going to live America afterin nine months after, but I am just beginner ofin English. I'm going to live America in nine months, but I am just beginner in English.

I willould appreciate if you modify my passagany corrections you may have. I would appreciate any corrections you may have.

I like to call these "suggestions" because "corrections" sounds to authoritative, but I call them "corrections" when I'm on the receiving end because I'm giving authority to the correctors. Anyway: "I would appreciate any ___ you (may/might) have," I think is a good phrase to memorize. Since you can't guarantee the outcome in a situation like this, I think "will" isn't usable so it becomes a hypothetical "would."

I will appreciate if you modify my passagewould correct my entries. I will appreciate if you would correct my entries.

I will appreciate it if you modify my passagecorrect my entries. I will appreciate it if you correct my entries.