Retirement tax questions

A Roth IRA is not a "Roth" (or after-tax) 401(k) or 403(b).  They are completely different.

 

Information about contributions to work retirement plans is contained in your W-2.  Don't enter anything more.  When Turbotax asks about Roth IRA contributions, it is only asking about any private account you might have contributed to, not your work plans.