Lyra force camera to flying camera or distance camera on boom, and you even can’t remove lyra camera from pawn. I saw epic showcase how to change camera settings, but this is painful work, long, overcomplicated - like a most of lyra part and in showcase you will not see how make fps camera.
I tried to change lyra camera, but I only lost time, so my solution was disable lyra camera on start, add own camera, attach to pawn etc - standard way to create camera.
In my case this looks like this on pawn
Camera is my camera.
Rest is standard camera setup, you can find a lot of tutorials.