only the iRS would have copies since you say prior to 2020 they weren't done with TurboTax and the only copies you had were destroyed. you can go online, register, and download transcripts https://sa.www4.irs.gov/secureaccess/ui/?TYPE=33554433&REALMOID=06-00008e4d-63f6-1187-a229-7c2b0ad00...
or you can mail in 4506-T for transcripts
https://www.irs.gov/pub/irs-pdf/f4506t.pdf
or if you need an actual copy you can mail in form 4506. there is a fee of $43/return
https://www.irs.gov/pub/irs-pdf/f4506.pdf
