Do you mean you are a Lyft driver---or that you use Lyft to get to work? You cannot deduct anything for the costs of commuting to work whether it is in your own car, an Uber or Lyft car, a bus, train, or plane.
If you are a rideshare driver then you can enter your self-employment expenses on a Schedule C
https://ttlc.intuit.com/questions/2926899-how-does-my-side-job-affect-my-taxes
https://ttlc.intuit.com/questions/1901340-where-do-i-enter-schedule-c
https://ttlc.intuit.com/questions/3398950-what-self-employed-expenses-can-i-deduct
Tax Tips for Uber, Lyft, Sidecar and other Car Sharing Drivers FAQ
https://turbotax.intuit.com/tax-tools/tax-tips/Self-Employment-Taxes/Tax-Tips-for-Uber--Lyft--Sideca...
https://ttlc.intuit.com/community/charges-and-fees/help/how-can-i-apply-my-uber-discount-to-my-turbo...
https://ttlc.intuit.com/community/account-management/help/why-isn-t-my-lyft-discount-being-applied-t...
**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.**
