I downloaded Magic for 1.19 with ViaVersion, But when i did /magic and whatever command includes there, It only shows the Help command. There's no error at console at all.

Are you using the dev build?
Does your console/logs claim it's loading the plugin?

Are you using the dev build? Does your console/logs claim it's loading the plugin?

I don't know if this is a build or not, But the Jar name is "Magic-10.7.1.jar".
And No, At some point when i start the server it gave the error " ```
[Magic] Something went wrong with some Deep Magic, plugin will not load.
[Magic] Please make sure you are running a compatible version of Spigot (1.9 or Higher

I'm using 1.19 Spigot Server

You will need to get the dev build from jenkins.elmakers.com