A quick overview of how you can add plugins to your Minecraft server, that will enhance gameplay, performance, and overall quality of life features.
Adding plugins with the server's File Manager
1. Head to your Game Panel, and get to your Files tab.
2. In this tab, find the directory plugins and open it up.
3. Now, head to your desired plugins page: Spigot, Curse Forge, wherever you like. Make sure you download the plugin version compatible with your server version; it will state on the website for what versions of Minecraft the plugin has been tested for, and then drag the .jar file into this directory. I have chosen the plugin EssentialsX.
(There is also a button dedicated to uploading your file if dragging the file does not work)
4. Now restart your server, and your plugin should now be active.
