Scholarship / GKS LANGUAGE STUDY PLAN before come to Korea and after; My long-time interest in this country [5]

This whole essay is a bit all over the place and you have a few grammatical errors here and there. There is also a lot of repetition of the same words.

You should try to organize your writing by adding periods of time and bullet points.
For example,
Before coming to Korea
1. January 2020 - September 2021
-I learned Korean through self-study by using 'Talk to me in Korean' textbooks and completed up to level 4.
Also, instead of saying you will take classes only for academic writing, mention that you will take an IELTS course to improve your English and prepare for the test.

In the After Coming to Korea part, you should mention how you will reach your goal of 7.5/8.0 band score. What will you do to prepare for that and how you will keep practicing your English even after staying in a non-English speaking country. You should also mention that you will increase your vocabulary by learning words that relate to your major in both Korean and English.

Undergraduate / Study plans to learn something new everyday by learning Korean and also about the country [6]

In the language plan, you need to mention what you did or will do before going to Korea and what you plan to do after going to Korea in terms of learning Korean and English.

In the before going to Korea part, you can add the things you learned about the Korean language, the Korean alphabets called hangeul and what you did to improve your Korean. You should also talk about what you did to improve your English. You can mention that you read English books and watched English movies. Also, mention that you're preparing to take the IELTS test and how you are preparing for it.

In the after going to Korea part, you should mention what level of TOPIK you aim to achieve within a specific time period and what steps you are going to take to reach your goal. For example, taking classes, watching dramas, or communicating with the people there. You should also mention what IELTS score you aim to achieve and how you will get your desired score while living in a country that doesn't have many native English speakers.