Missed Passive Loss from rental property for the year 2019, since I had an agent doing taxes until 2019 and I switched to Turbo tax in 2020. How to include that now?

2019 was the first year I rented the rental property that I own. For year 2019 I had an agent doing taxes and he calculated the rental loss. I switched to Turbo tax in 2020.  I didn't know about adding prior year losses. For this year 2021, I noticed Turbo Tax brought the losses from 2020, thats how I learnt that prior year losses are needed to be on the form. How I can add the losses for year 2019 now?