im having some troubles with the shine of some of the models, the models are fully textured, its just the shine of them for some reason
Edit: i cant send pictures of them because idk how to on steam

Take a screenshot on gmod, then go to View>Screenshots (on Steam; very top left) and upload the screenshot and set it to "can be viewed in public". Click "View Online" and copy the URL and you can paste it here. There could be an easier way, but I do not know much about sharing screenshots.
The gloss/shine on the modles could be a result of the cubemaps. If you are able to edit the map through the command console in gmod [ press ~ or ` ] and type mat_specular 0 it should turn off all reflections. I will look into downloading the map myself and run a test.

https://psteamcommunity.yuanyoumao.com/profiles/76561198419049162/screenshot/949596687991845639

would you like more screenshots?

I found a way that might fix the issue, but this is a difficult error of transaction. Type this into your console:

-mat_specular 0
-map gm_battlefield_1_renovation (Load your map)
-buildcubemaps
-disconnect
-mat_hdr_level 0
-map gm_battlefield_1_renovation
-buildcubemaps
-disconnect
-mat_specular 1
-mat_hdr_level 2
-map gm_battlefield_1_renovation (Load different level; clears texture cache)
-map gm_battlefield_1_renovation (Load your map again)

I will do my part for generating propper reflections to LDR and HDR modes, then I will make an update to the map.

The texture of the weeds and grass is somewhat messed up

Floating in some cases

@8x50mmR are you talking about like this? because i have the same problem. https://psteamcommunity.yuanyoumao.com/profiles/76561198419049162/screenshot/949596687991873389

Yes, also one of the tunnels that is also a spawn point is just purple, theres textures there but its just purple colored

This is a "coordinate" error in the .vbsp file, meaning the dimentions of a grass picture are measured lazily, thus the grass looks like the bottom half of a shrub cut off with some other detail. Basically the developers of the Half-Life game exported the textures to be useable for gmod, and I do not know what happened to the grass sprites amongst them. All textures that have grass sprites can have messed up positions on random occasions.

My solution is to replace the ground [blend] texture with a different one that can use a custom .vbsp file, but that requires a custom grass sprite file the texture can use to project from the ground in game. I tried this on gm_pandora_night when all the .vbsp files were corrupt on one random occasion.

@8x50mmR, if all reflective surfaces in the map project missing textures that appear purple, you can try typing the command lines in my post above. I have done an update on the map yesterday that should have fixed the error. If the map does not let you use the command lines then I can just remove the cubemaps if you do not mind a gloss-free map.

one side of the trenches has textures, but purple tinted, i mean the wood part. also, the little tunnel on the opposite side has textures, too, but is very, VERY heavily tinted purple, the part thats dirt, that is. on other maps this sorta thing has happened, and I've tried unmounting some of my games from gmod, and that has worked, so ill try it. ill put up the results.

didnt help

The problem is HDR hates cubemaping sometimes. Either cube maps in level 2 HDR are either fullbright or they can be completely missing. I posted a list of command lines in this discussion above if it helps. If you want to get rid of the cubemaps altogether, type mat_specular 0.

There is an odd like fog that runs across the grass