Many people have multiple TT accounts and forget how to access them. Log out of the account you are in now.
Or did you use the desktop version of TurboTax? If so, the files are on your own hard drive or any backup device you used like a flash drive.
To get a copy of your previously filed returns prepared with online TurboTax https://ttlc.intuit.com/questions/1900748-how-do-i-get-a-copy-of-a-return-i-filed-in-turbotax-online
You said you let your family live in the home for more than 3 years of the last 5 but you did not say if you have been reporting this as a rental property all these years. If you have then you will sell the rental and pay taxes on the profit and recapture the depreciation allowed.
If this has not been a formal rental then you will pay taxes on the profit.