Is that possible in minecraft without plugin?

Hello there I build a minecraft server with friends. And we also want to play minigames. I have a question now. We want to build a fighting arena but in the werver settings pvp is off. Is supposed to stay that way but can you turn on pvp in 10 blocks or so? Minecraft java 1.14.

Unfortunately, without plugins you can only influence it in the server settings. If you decide to use plugins, you could leave PvP in the server settings but, for example, use WorldGuard to put a PvP allow flag on the Arena region

You can just upload a map and play without plugin Survival Games, just without plugin benefits like timer / final fight, random generated chests

This is not possible without plugin.

You would have to use the plugin WorldGuard (in combination with FAWE) to create a region in which you can activate PVP.

No. He would have to do it the other way around. As far as I know, the Server.properties overwrite (in most cases) plugins