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I have a question about the file structure, why you didn't do a single YBN file for the entire map?
Also, there's a better tool to create maps and almost anything related to mapping called Sollumz, you should test it.
https://github.com/Skylumz/Sollumz

Why is this preferable to a ymap?

Fix the fur, it makes the whole thing to look really bad.

Next time try to take a better photo.

@GtaPlayaOnDrugs sure

@O-MATIX idk

Please note that modern .NET versions aren't called .NET Core anymore, so using that naming is incorrect.

Nintendo hire this man!!!

@TheRuler666 XnConvert, use it to resize textures, then you can use my tool to get proper compression, (TGA and PNG) recommended.