This mod allows for this to be a pvp and a pve server at the same time if you want an easy and fun play experience turn off pvp. if you want a challenge and to try and kill others turn pvp on.
/pvp on turns on PvP for yourself
/pvp off turns off PvP for yourself
All this information was found from https://modrinth.com/mod/pvpcontrol this is not my mod.