Can not remove an object in photoshop 2023

Hello,

I have looked at the forum messages and watched a dozen videos but still cant get an object removed from my image. I appreciate some help.

I am using photoshop version 24.5.0 20230512.r.500 3fc8e4c arm64 on a Macbook

I do the following:

1 - I create a new file in photoshop and copy image into it.

2 - I save the file.

3 - I make a copy of the layer so the original one is still intact.

4 - I go to the copied layer and use "object selection tool". It detects the object and make it pink with a dashed line around it.

5 - I then try to do one of the following steps

5.1 press the righ hand key and I get a menu, but "delete and fill selection is disabled" so can not delete the object.

5.2 I try to use "removal tool" and when select object I get a message that "Can't use the tool because the target layer is unsupported."

I must be doing something really silly, as I am expecting that this feature should work out of the box. 

Anybody knows what is going on? 

Thanks