Please look at the following topics, I have also suggested to a moderator your query is moved to one of those, if it is appropriate, or if you find it is and this post could even be deleted.
https://forum.fairphone.com/search?q=usb%20video
for example
Alternatively you may also like to consider connecting via wifi
I found some time to test with the two devices I have at home
Samsung BluRay Player BD J5900
Microsoft Display Adapter V2 (link to German MS page, can’t find the device on their US pages)
Both work and I can mirror my phone screen on the TV.
The MS page says, the adapter supports “Wi-Fi CERTIFIED™ Miracast®” so that obviously works with the FP3