I appreciate your ambition and aspiration to become a cricket player of national level. It may look difficult but with hard work and determination it is possible.
First of all confirm by asking yourself what is your aptitude and interest for your career. If the answer is cricket then you need not to bother for anything and just go on devotedly to achieve your objective. Are you already playing cricket in local matches or inter school matches. If yes, then it makes the things even simpler. If not, do not worry let us start from the scratch.
You must find out some local or regional club or sports academy in our country where you can learn the subtleties of this game. There are many good and reputed sports/ Cricket academies in places like Delhi, Jaipur, Bangalore, Hyderabad, Dehradun, Mumbai etc and you can try to get admission there for your coaching and learning the latest in this game.
Please note that learning a game is one thing but to excel in it and reach the glorious heights is entirely a matter of dedication, hard work and persistent efforts in the learning of intricacies of this game. Focussed and concentrated practice is required to achieve perfection in anything and that is true for cricket also. Your parents might be aware of all these things and that is why they are forcing you in an easier career path but do not accept it if it is not going to be your cup of tea rather explain to them your interest and your seriousness to adopt cricket as a career.
So, go ahead and join a good cricket academy near your place and remember that for a determined person sky is the only limit.
Knowledge is power.