Hey abishek

I can understand, everyone in this world facing different problems,

You are just 22 years old,

I don't know if you know this or not SBI PO eligibility age is between 21-30 years, it means you are just 1 year late, and you have almost 9 years to prepare and get the job, not only this, when you prepare for this exams, you are gathering information and knowledge which can also help you in different fields, If you even want to change your field or work sector, all these studies will help you in the future,

The best way to accelerate and create calibre is by working towards it everyday,

Try to divide your whole journey into smallest parts and work on them daily, nothing happens overnight, somedays you will feel that you are lagging, but it's okay, you can catch up as soon as possible.

Get notes, model test papers, and start preparing with low levels and upgrade with time to the Highest level.

It can take 6months to even 1 year and it's normal.

Also eat right, read good books( as a suggestion read obstacles is the way) , meditate and also be grateful.

I hope it helps,

Also it's never too late , and in your case it's obviously not even late.