I guess you are trying to say: "You can’t have your cake and eat it too." ?!

Also, "want the milk without buying the cow", but I like "don't get me wet" because it highlights not wanting the result without the unpleasant step of the process. Then again, we have "dry cleaning" and ozempic.... https://english.stackexchange.com/questions/429316/wash-me-b...

I'm reminded of a meme involving a dog with a ball: "Please throw? No take. Only throw."