Upload plugins to my minecraft server

Hi , I have a question why can't you upload plugins to your server if you can HOW I really want that because I am creating a server but I need a nickname plugin and I found one but it is not listed the list Thanks

yeah i know but it's from a different website than spigot or bukkit it is this one:

https://www.spigotmc.org/resou…orld-1-7-10-1-16-x.51398/

Ohhhh ok