To allow a connection to your database, you will need to install a MySQL module on your Garry's Mod server.
Please note that you have to use different files, depending on the OS of your Garry's Mod server (Windows/Linux).
- Download this file and upload it to garrysmod/lua/bin (create it if it doesn't exist):
If you are not allowed to upload dll files, ask your hoster.
For Windows, the Visual Studio redistributable for 2019 may be required.