Theo mik thì thế này sẽ hợp lí hơn :
Hello everyone my name is Han and today I will tell you about my hobby. My hobby is playing badminton , I have loved playing badminton since 4th grade , badminton is a very easy game, everyone can play it. In fact, you can play it anywhere with rackets and a shuttlecock. I think i will continue my hobby in the future. Thanks for listening to me.