I need help determining the Prior Year Roth IRA Contributions. My Roth IRA is over 30 years old, had roll-overs and contributions over years, but don't have 30 yr records

I rolled over an IRA to my ROTH, then contributed a bit. Then I earned too much and contributed to a regular IRA Stopped working 13 years ago, and made sporadic contributions. I don't have 30 years of tax or other records