Can anyone check my essay pls? especially my tenses, grammar and puctuation. It about describing personal characteristic of a person

Mr. W.: My Unforgettable Teacher

Thesis: Mr. W. was undoubtedly the unforgettable teacher I ever had because of his tremendous cleverness, remarkable personality and astonishing dedication to his work and to his goals in life.

(1) It was my first day of high school when I first saw Mr. W. I never thought that him- a tall, handsome and a young professor would have been my teacher in my history class- the most boring subject I could have ever imagined. I always hated history however, all of that changed when he became my professor. He was undoubtedly the unforgettable teacher I ever had because of his tremendous cleverness, remarkable personality and astonishing dedication to his work and to his goals in life.
(2) The first time I saw Mr. W. I had no idea that he was my professor because he looked like more high school student than a high school teacher, but when he started to talk about the subject I was so amazed of how smart, eloquent and great speaker he was. He was only twenty-three years old but he had gotten already his master's degree in history. He was the best teacher I ever had. He made the most boring subject exciting and meaningful by giving us some thrilling activities such as games and fieldtrips to understand and value the subject more. He made me understand how important history was because it was indeed a guide for our future. His tremendous cleverness made me admired him so much.
(3) In addition to his undeniable intelligence, I always admired him because of his remarkable personality. He could not only teach students inside the classroom but also he was a great adviser and a friend to all of his students. In addition to that, he was also helping different organizations that help poor children to get a better education. Indeed, he was very kind-hearted, thoughtful, understanding and had a great sense of humor. Personally, I thought of him as my first love because for me he was perfect, although
-2-
I knew from the start that it was impossible for him to like me back. But I was surprised at all when he texted me for some reason. After that, we always felt awkward when we met at school. When he found out that I had a big crush on him, he texted me that I should prioritize my studies first to achieve my goals in life. I would never forget my high school days because of him.
(4) His astonishing dedication to his work and to his goals in life made me respect and admired him so much. When he was at school he was a professor- a mentor, but when school is over he was a friend to all of us. He knew his limitation and he prioritized the importance of education more than anything else. He was a strict teacher but in a good way. My only problem to him was he always liked to give us the hardest examination to test our ability- always enumeration type and all erasure or using pencil was considered wrong, but in spite of that, I learned a lot from him.
(5) Mr. W. was the best teacher I ever had because of his tremendous cleverness, remarkable personality and astonishing dedication to his work and to his goals in life.
Above all, he was an outstanding role model to his students, and I was so grateful that he became part of my life and made my high school days unforgettable. Indeed, all the things I learned from him would always remain in my heart and I would always admire him for the rest of my life.