I updated the nav_mesh
the rest is just how i want it to be but thx for the advice still.
Feel free to download, edit and reupload any of my work to your liking if you credit my original work.

Also you can add .kv file to your map if you want to change player models.

I have extracted materials from your map and I see that they are 16 x 16. That is too small. You can use for example IrfanView and use batch conversion to rescale all textures to 512x512 or 1024x1024 without resampling (you can do it manually with GIMP or something but this will take some time) Then you have to change scale of textures in your map to make them look how they should. I hope you will do this because idea for map is great and it will be fun to play but textures are too bad.

Map Looks Good but....
Textures are horrible, I think you should resize them without resampling so map will get pixel look instead of being blurred.
Map don't have skybox.
Nav Mesh for bots is outdated, I had to generate it by myself to make bots stop blocking on walls. I think you should generate new one and include it in map.