I found a problem regarding rigs from blender not matching their exported versions in roblox.
I decided to test this problem using moon animator’s r6 preset.
I used a blender animation I made for the r6 preset
then I exported the preset from roblox studio into blender using
the blender animations plugin
I rebuilt the rig using the rblx animations plugin and exported
the rig from blender to roblox. Playing the animation now looks weird.
If you need more info about my problem or if you have alternate methods of exporting rigs from blender to roblox studio please let me know.