ITR Filing: Ever faced an issue because of the "way" your CA saved the tax?

It was a mistake that I selected the new regime thinking that it would be easy to switch back to old one during ITR Filing, but now I do not have proofs such as the premium amount paid (for parental and self insurance taken from company)...

Looking for a experienced CA to help with filing ITR and doing tax planning. I have spoken to few online ones and feel like they are only good for filing ITR.

I will be filling ITR for the first time. How can I find a CA for the same. I’m in blr.

Can someone help me find a CA who can help me file my ITR and does not charge a bomb