My old tax returns are all missing. I should have tax returns from 2020 and older. I also need to file my 2021 tax return and can't find out how to do it.

I have been using Turbo Tax my whole life.  I know I filed taxes at least from 2020 using Turbo Tax.  I haven't logged into my account in 3 years.  I logged in to file my old 2021 tax return.  My account shows no tax history what-so-ever as if I have never used Turbo Tax before.  There is also nowhere to file my 2021 tax return.  Please help!