There is a blender scene I just downloaded and it has a camera in it. Whenever I try to delete it, it deletes the whole scene. All i want is the camera to be removed
$\begingroup$ Could you please share your file: blend-exchange.com $\endgroup$– moonbootsMar 19 at 7:45
$\begingroup$ Check if the objects are parented to the camera and unparent it first if it is so. $\endgroup$– Lukasz-40sthMar 19 at 9:20
$\begingroup$ @moonboots Not necessary, it's an instanced collection as the screenshot shows. $\endgroup$– Gordon BrinkmannMar 19 at 15:59
$\begingroup$ @Lukasz-40sth If the child object is not selected, deleting a parent object will not delete the child. Only transformations that are made in relation to the parent object get lost if you delete it. $\endgroup$– Gordon BrinkmannMar 19 at 16:01
$\begingroup$ Yes that's what I thought but I wanted to make sure ;) $\endgroup$– moonbootsMar 19 at 16:01
It looks like you used Append to import the collection into your scene. And in the Append options "Instance Collection" was enabled. You can see it from the orange collection symbol in the Outliner. This is just an empty which instances the collection.
And this means you just have a linked duplicate to the original collection in your scene which can only be changed as a whole, but only transformations like moving, rotating, scaling. You cannot edit individual objects or meshes or delete individual parts, only the collection altogether.
To be able to manipulate individual objects you have to convert the instance into real objects. You can do this by selecting the collection, then from the 3D Viewport menu choose Object > Apply > Make Instances Real or in the viewport hit Ctrl+A > Apply > Make Instances Real.
In the tool options on the bottom left of the viewport you can then choose if you want to parent the converted objects to the empty from which the instance came and if you want to keep the original hierarchy of the original collection when creating the individual objects. You can do this by enabling the options.