The delete command will yank the deleted text, but it's not my expected behavior. I just want to delete the text without overwriting my yanked text. Is it possible to change the default behavior with config? PS: I don't want to use another command to achieve it.
You can map
but I'd keep the original command as is, though.
As romaini said, original command for d is good the way it works and I wouldn't advise to change it.
What you can do though is mapping
In my case leader key is