Minecraft server help needed?

I made a server and would like to have a lobby and several games: GunGame, skywars, bedwars but how do I get from the lobby to another game e.g. Gungame

I ask for help

If only there were a platform on the Internet where people could watch videos, e.g. To upload something like that.

Yes I don't know what to google there

You have to download plugins or create them yourself. Search best on Youtube for "program plugins"

I already installed the plugins my question was how I could connect the skywars to the lobby or bedwars to the lobby

The best thing about a bungee record, but I think you need a domain for that. Search goggle for "Create Minecraft Bungeecord"