Only download .zip files from trusted sources like GmodStore or reputable community sites, as manual files are not verified by Steam.

Ensure the folder name has no spaces or capital letters, as these can sometimes prevent the mod from loading. Important Tips for Manual Mods

Open the garrysmod folder, then open the addons folder.

Open Steam, right-click Garry's Mod in your Library, and select Manage > Browse Local Files .

Ensure the extracted folder contains subfolders like lua , materials , models , or sound . If these are hidden inside another folder, move that main folder out.