1st Apply the Scale to all of your Meshes
Ctrl + A -> Scale
2nd Check the Endpoint of the Animation Timeline and set it to the length of your longest animation
3rd Select all Meshes for the Export and select your armature as last Object
4th Select "File" -> "Export" -> "Export as an .fbx file"
5th Adjust options:
"Main"
uncheck "Active Collection", select "Active Elements" instead
Select "Forward Z" and "Y Up" for "Forward:" and "Up"
check "Armature" and "Mesh" as Objects for export
"Geometry"
"Apply Modifiers"
"Armatures"
uncheck "Add leaf bones"
"Animation"
uncheck "NLA Strips" and "Force Start End Keying"
6th Select a file location and Name the file