Question about the “X†(next to checkmark) Daily Chess
If you’re asking can your opponent can see if you had selected a piece to move (as they would have done OTB) then no they don’t. Should they be able to see if you were/had cancelled a selection? Interesting question.
If you are playing a friend you can agree with them to enable “request take-back” in the game parameters settings (before the game begins). Otherwise, once the checkmark (aka tick) is pressed your move selection is permanent.