No motivation to do well in maths? E.g when i get stuck i feel like its the end of the world and end up doing something else? What should i do?

Changing your feeling may help.

Instead of feeling like it is the end of the world when you get stuck you could try feeling challenged, angry, insulted, and even intrigued.

I am a mediocre mathematician but I managed to get through two semesters of college calculus by feeling challenged and intrigued by the material I found very difficult to concentrate on.

Better to change how you feel now because they will not change the math for you.