Hello Ryan,
Listen, suicide is not a solution for everything. Please be confident with yourself and eventually everything will happen as you want it to happen.

Being a PCMB student myself, I know how frustrating it is to cop up with the syllabus, and prepare for competitive exams at the same time. But we all have to fight, right? We just cannot give up on our lives.

Here's a suggestion for you. Take a small break from your studies for a day. Enjoy yourself, do what you like to do. Then from the next day, start studying. Make a time table for yourself. Study for 4-5 hours daily. You won't face much problem at the end of the year if you study everyday. Apart from studying, do enjoy your life as well. Talk with your friends, make new friends, start with your hobbies or start something new. Try to follow this for few weeks, eventually you will feel better.

And never think of suicide. People do care for you, so please remove all the negative thoughts from your mind. Try to do meditation for an hour everyday, it will bring positivity in your life.

Hope this answer helps you.
Thank you!

If no one will care then why do you want to suicide and its not the solution.

Even if you have PCB there are many other courses which you can pusue after 12th.

Dont over stress and be happy :)