I did my job for the first time by myself because my senior was absent by her son's sickness. I was afraid that I could complete my job. I found out that my senior was very important person for me. I thought that I got about my job almost, but I didn't understand details. I had hard time finishing my job. I couldn't make a gel, but others was almost within my permission.
修正後
I did my job for the first time on my own because my senior was absent due to her son's sickness. I was afraid that I wouldn't be able to complete my tasks without her guidance. This experience made me realize how important my senior is to me. Although I thought I understood my job fairly well, I struggled with some of the details. Completing my tasks was challenging, especially when it came to making a gel. However, I managed to handle most of the other tasks on my own.
