do you have any idea how the file explorer works? as long as you don't have the same files as in this mod's lml folder it doesn't replace the folder it just adds what is in the mod's lml folder into the lml folder you put it in.
https://www.nexusmods.com/reddeadredemption2/mods/2189?tab=posts
https://www.nexusmods.com/reddeadredemption2/mods/3805?tab=posts
https://www.nexusmods.com/reddeadredemption2/mods/3859?tab=posts
The 3rd one, Upscaled Animals AIO has already applied his file replacement idea and it was successful
Brother a legend has found a way to fix it, his name is dominatorgt on Nexusmods. Read his comments on some mods like terrain upscaler, animal upscaler and that all-in-one texture upscaler by garbageman (that's his name)
Idk I just got all the requirements and followed the instructions, maybe remove all your other mods or if you have essential mods put RDO at the bottom of LMM and click overwrite
Edit: I haven't fixed the problem in my original comment tho