It's not clear from your post whether you got an undo on your own misclick.
If you did not ask for an undo, or if you asked for an undo and was not granted one, then I think your move wasn't unsporting at all. It wasn't sporting, but it also isn't unsporting. It's just baseline expected behavior.
If you did get an undo, then I think your move is slightly unsporting. But I wouldn't consider it egregiously out of line. One never has an obligation to agree to an undo, except maybe if the opponent had granted one to you.