Why do they put so much pressure on me even though I do my best?

It might be because they want you to be better than those of other people they know who are already doing good. Sometimes, other people can't just be contented with whatever they have.

The pressure you feel may be due to your own perception on the situation. When under stress we tend to imagine scenarios must worst . So those who are putting , what you see as , pressure on you are probably doing it as the care about your well-being and about your future. I understand it is hard to be under pressure at times , especially if it is by those who surround you most. If i were you i would just think the reason for these putting so much pressure on you is because they care , and if you feel as if you are doing your best . You will care a lot more so the pressure is not only from surrounding parties but also from yourself.

don't take it too seriously, keep in mind that they want you to excel, to push yourself and its these kind of pressures that you might be thankful for later on. They just want the best for you.

Maybe they can't understand that you already tried to give your best. Try to explain this with many arguments.

We pressure you because we know you can do better!! We never mean to make you feel sad just as your parents we are aware of your maximum capability. And we want you to do well

Because they know how much you are a wonderful person and you can do more, just show them that you are moving a little bit at a time and you will never give up. Finally show them that you'll find your own path of excellence.

they want the best out of you don't worry I'm sure they are happy with what ever you get, don't feel upset

Some people believe that when someone is working hard, and feels external pressure to work harder, that the person feels motivated to achieve even more. Maybe they feel you're capable of even greater things?