hii raheem

i would like to suggest you in my point of you while becoming a graphic designing its a very good scope in the present era as the people have huge demand so in that case you will get good jobs in marketing and ad agency , in case if you do the free lancing you will be paid extra as well

coing to computer if you do BCA, BE in computer then you will be learnt about programming, software designing stuff you wll get jobs in IT department where its also demanding as well so i would like suggest go as per your interest and passion 

regards