Not having your W-2's is a problem. You should make every effort to obtain those from the employers who issued them--even if you have to beg. You need them. The other thing you can do is get a wage and income transcript from the IRS which will show the income reported to the IRS by the employers but it will only show federal information--no state info -- so if you need to prepare state returns the transcript will not help with that.
You can get a free transcript from the IRS:
https://www.irs.gov/individuals/get-transcript
As for preparing the returns--you can use desktop TurboTax software for years 2016 through 2018. It has to be downloaded to a full PC or Mac--not a mobile device. And the returns must be printed, signed and mailed--they cannot be e-filed.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
