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assuming you meant 2019 MBP (MacBook Pro, as opposed to the not yet released Mac Pro), if you want two HDMI displays, firstly I'd confirm you can't use them via DisplayPort, anecdotally (based on forum posts) it seems DP will generally give less weird issues, but if you must/want to use HDMI, I'd suggest a TB3 to Dual HDMI adapter like https://eshop.macsales.com/item/OWC/TB3ADP2HDMI/ or https://www.startech.com/AV/display...apters/thunderbolt-3-to-dual-hdmi~TB32HD24K60 or https://www.sonnettech.com/product/thunderbolt3-to-dual-hdmi-adapter.html.

I have a dual DisplayPort version of the OWC model, and it works flawlessly (occasional macOS/Mac mini weird boot issues notwithstanding - they're reported by people with regular USB-C DP Alt-Mode cables too, so I don't believe its related to the adapter).
 
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