Sorry you are on your own for 2019 and 2020. I can give you links for the blank IRS forms if you want to do them by hand. Or you need to go to a local tax place or accountant. But it is too late to get refunds for 2019 and maybe 2020.
Turbo Tax only sells the last 3 years...2021, 2022 and 2023.
How to prepare a prior year return
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-prepare-a-prior-year-tax-return/00/25...
To do a prior year return you have to buy the Desktop program here,
https://turbotax.intuit.com/personal-taxes/past-years-products
You will need a full Windows or Mac to install it on.
You have to print and mail prior year returns. When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return. Don’t forget state.
Important! Mail Federal and State in separate envelopes and mail each year in separate envelopes.
