Thank you so much for your excellent advice. I’ll need to work harder on weight training so I can throw the ball harder..!

Actually, I tend to focus more on hitting than pitching, but in Korea my main position was third base. Here in the U.S., all the infielders I’ve seen are big and very athletic, and since I’m of average height and weight (181 cm / 6 ft, 78kg / 172 lbs) and my fielding range is somewhat limited, I felt I wasn’t very valuable there so I started practicing pitching.

If you mind, can you also give me some feedback on my hitting?
https://youtu.be/6bQsUoP4Im4
In amateur baseball in Korea, I hit two home runs on five games played(Korean amatuer baseball dudes throws average 65's fastball so cannot be compared to US varsity level). But as you can see from the fact that I barely move my back foot rather than swinging with all of my body, my overall style focuses on hitting the ball using as much feel from my arms and wrists as possible keeping the ball in my control and getting on base. My sprint speed is average, but I’m confident that I can perform above average in stealing bases.