Just be on your own way. Don't give importance to comparisons.Always try to do what you want to do. You are going to be happy

well it affects me a lot my brother is perfect everyone loves him while I think I am just a faliure

I am 14

but I just feel bad my parents have nothing to be proud of me and seeing my brother achieve everything makes me feel worse

Hey, everyone has something that yhey are good at. Maybe you don't know that right now. But its fine. Your worth does depends on your achievements. I know how comparison feels like, I get compared to my brother to this day. I don't know if there is an easier way to tackle with this problem. But all you can do is to try to ignore them when they compare you with your sibling. Its okay to not be good at studying. Also, you should try to explore more fields in which you may be interested, and start learning about them. This may be difficult if your parents don't support you. But if its something whose facilities are available in your college/school, then you can try them. Maybe you can tell here what activities are you interested in, so that I or some other people can give advice on what can you do further in your life. I know its all easier said than done. But we have to try, try our best to get out from the pits that life drops us into. And remember, your worth does not depends on your achievements, you are worthy of all the love, respect and care that you have been given and more.

but parents just love comparing also I always have to stop my tears when my parents insult me

Thats very sad. I wish it would have been better for you. But is there any relative (preferably an uncle or an aunt), who understand you and whom your parents trust? If yes, then you can talk to them to tell your parents to stop comparing their children, as it is not good for the mental health of their child and also hinders with their progress. Also, the child stops trusting and telling everything to their parents, thus hiding their problems and their parent-child bond weakens.

that's true

I always have to act as if I don't care what my parents say while crying I just want my parents to understand me

If you don't have an adult relative to talk to your parents, then is the sibling that you are compared to, understanding of your problems? If yes, then you can talk to them and ask them to tell your parents to appreciate your efforts too. You can also ask them to explain your parents the effects of comparison on children. Maybe they'll understand. But it will be very difficult if the other sibling(s) is/are not supportive.

he enjoys when my parents compare he lives to be better than me

I am not able to talk to my parents

Do have have any adult relative or a friend's parent, whom you and your parents trust?

If yes, then you can ask them to convince your parents into stop comparing their children