If I right click on my premoves it'll cancel them too.
Premove question?

wrong place to suggest that, fezzik, send message to help and support - under 'contact us', to suggest changing the system.
however, control your own moves 'pre-selection' better and you won't have a problem in your games.
regards,

Thanks for the replies. I had been putting the piece back and that had resulted in 2 bad moves instead of one.

How about handphone or tablet
On the apps, just tap some other square.
https://support.chess.com/article/642-what-are-premoves-and-how-do-they-work
For the mobile website, the only ways I know of is a refresh (on Play > Live Chess but don't do in Play > Play since I believe that can resign your game). Toggling premoves off can do it, but isn't really feasible.
I have premove turned on for my live games. I occasionally either misclick or blunder but catch it before my opponent moves - is there a way to delete that premove?