Pokémon Model Ripping Project

[ilove3dmodels]

hello

Please help (if u can or want to)

trying to get switch models from SwitchToolbox, the model is grey & dark grey checker covered (i tried to install the 'if no textures show up, but it says i have latest version)
also unable to get x&y models from SPICA because it says access denied but S&M + OR&AS work (all in the same location)

also what are these types of programmes refered to as?
how would one go about learning to extract and export models like what spica does? this stuff is amazing