After you file

@ morgan00112  wrote:  "I would like a copy of my 2019 tax return as it has been deleted from my computer.

Could you please send me the copy by email. "
Or did you prepare it in the desktop software (CD/download)?    If you used the desktop software, then you are the only one who could have a copy, such as the PDF or the *.tax2019 data file.
If that's your situation, you can download a free 2019 tax return transcript at the IRS website. https://www.irs.gov/individuals/get-transcript
By the way, it is not safe to send sensitive documents like a tax return in regular unsecured email.  It has too much personal info including possible bank account numbers.