Hello Keet. This AI is so mysterious)). Here is the texture of his sofa. What can be fixed here?)))))

Well, it can be done but it's going to take some work [:))]
How is described here: https://blender.stackexchange.com/quest ... rent-parts and you can do it using the OBJ/MTL model.
This achieves two goals: separating parts into individual groups and splitting the texture map into individual textures.
I would only recommend this if you really, really need a model with separate parts and textures and if the model is not too complex.