Hello,

In order to succeed in anything, your attitude and mindset matter a lot, hence despite the setbacks you have faced which is inevitable in case of everyone, it's important that you move ahead in life, you're still young, your entire life is ahead of you, so don't dwell in the past, live in the present, see the opportunities that you have and use it wisely, leave every disappointment behind and start afresh, remember that it's never too late to chase your dreams, have a positive attitude and mindset first towards yourself, this is important in order to achieve any kind of success, if you want to crack SBI PO, then go through its syllabus, gather the required study materials, and initiate the preparation process, practice sample paper on a regular basis to evaluate your progress, there are many sites which offer free mock papers for various sections you may use that to your benefit, if you have any others doubts, you may ask in here as well.

Good Luck!