Hey there!

First of all its a great thing that you've decided to do something good with your life by aiming for the sbi exam. To answer your question, yes . Yes you can crack the exam you just need a little focus. You can achieve whatever you put your mind to so if you set it straight in your head that this is what you want you'll achieve it. Practice a lot, solve mock question papers and whenever you feel like giving up just remind yourself you are doing this for your future.