If you are using a Minecraft server on GameTeam, you do not need to install most things manually.
GameTeam includes built-in Minecraft management tools under the More menu in your server panel. Depending on what you want to do, you can use pages such as Mods, Configs, Versions, Modpacks, Worlds, and Plugins.
If your question is related to a Minecraft server, you should check these tools first, since they are designed to handle installation and management automatically.
Manual installation steps are generally only needed for other games or for special cases outside of the built-in Minecraft tools.
If you need help with this, please submit a ticket.