Camping is staying hidden in one spot and getting any free kill that comes your way. Defending an area is taking a bridge or a room and making sure anyone who approaches that area is dead. Planting explosives or turrets at entryway, having your team guard weak points so you can’t get flanked. Basically setting up a killzone. E.g you have a sniper at the window, a spotter with you picking your targets and shotguns guarding the entryways.
Why do people call games that are nothing like Souls games “soulslikes”? People are lazy and don’t think about things, and most of the time it isn’t worth caring about anyway. So maybe take a step back and focus on something more important