A 'normal' landing would be to use full flap, virtually all aircraft can be landed flapless, but this is usually considered an abnormal procedure. You are taught how to do them in case you have a flap failure.
I would guess that your instructor was objecting to you doing flapless approaches without asking or being told to.
Remember your instructor will have a better idea than you of your abilities, and as you are effectively flying on their licence it is important to fly the exercise that has been briefed.
Having said that, as your solo experience builds there is nothing wrong with practicing glides, flapless etc while solo IF that is what has been briefed.
