is this correct? みなさん、今日は。日本語がもっと上手になるためにりゅう学生をなることにしますからだけ韓国に出て、にほんにくるだそうとおもう。
Hello everyone. In order to become more good at Japanese, I decided to become an exchange student, I think that it seems like only yesterday that I left Korea and came to Japan..... Does the eng translation even make sense?? T.T