I was struggling with the same problem, but after looking into it I was able to solve it without any external plugins. I created a video with all the details, including how to solve the root joint scale. I hope that it will be a useful resource to anyone else running into the same problem.
[Blender to Unreal Engine 5] Correct FBX Export Settings for Characters: [Blender to Unreal Engine 5] Correct FBX Export Settings for Characters - YouTube