So I'm using the garuda dragonised vertion based on kde ,and i want to try the GNOME vertion without any seperate installation ,can i do it ,i am a newbie so I don't know about than ,help
Hi there, welcome!
It is not suggested and not supported, but it seems someone did it.
But the same user...
Then you definitely shouldn't. Unless you are comfortable with troubleshooting, package management and DE configuration. Installing a second DE or switching DEs, especially if you want the Garuda experience, is not a "just works" operation. It is a do the install and then work through the resultant issues type operation.
I am fairly certain that it would be considered "unsupported" by the team. You are better off re-installing.