For fruit, I think 50 yuan a month should be about the same (just estimate, I don't buy fruit often)
Dinner and improvement meal, twice a month, each time in 50 yuan, 100 yuan.
If the mobile phone is not commonly used, I think 50 yuan a month should be enough.
Daily necessities, including shampoo, toothpaste and toothbrush, actually don't cost much, but if you are a meticulous boy, you may buy some facial cleanser, moisturizing cream, toner and mask, which is hard to say.
And your sixth and most important point, clothes. This thing is also large and small, depending on what grade of clothes you buy and how often you buy it. It's hard for anyone to calculate. It's up to you. You can give it extra anyway.
So this thing fluctuates widely.
And you will find that after you come to study, your expenses may be more than that.
Finally, to sum up, from my personal point of view and the comparison with my classmates around me, a child who is similar to you, if he is a classmate in Tianjin, may spend about 700-800, because he can go home on weekends, save a few days' meal money, and be more spoiled with his parents. Children from other provinces are around 800 to 1000. There are four people in our family, namely 600,800, 1000 and 1200. If you pay 1200, there should be a small surplus.
I wish you a happy study life.