Fravor isn't lying, and he's a generally credible person, he's just too arrogant. He got hyped up because he was told he was going to be chasing UAPs, made a single major mistake (misjudged the distance to an object) which created a parallax effect, and everything that happened after that was the natural misjudgment that comes from parallax. But he absolutely won't admit he could have been wrong because he's a hotshot fighter pilot and they don't do that.
This is a good simple video on the Navy incidents. He gets to David Fravor's account at 15:30. There are much more in-depth breakdowns where they come with all the math and shyt, but this gives you the outline.
Fravor tried to come back at him with Lex Friedman, but got basic things wrong. Mick corrects him on that here.