Sometimes we have to think from our parents' point of view. Sometimes the problem is not that they don't want to buy it for you, but that they really think it has a great influence on you. For example, if you want to buy a mobile phone, it is definitely not possible. Even if you agree, sometimes he will feel that if you use a mobile phone, it will definitely have a very serious impact on you.
So you should learn to put yourself in others' shoes. The only people in this world who don't have any external feelings for you are parents. They can give you everything they have, even their lives. So in this case, you feel just a thing. Are they unwilling to give it to you?
So you should understand their difficulties, their difficulties, study hard, change your destiny in the future and work hard.