Not with that attitude.

Protein powders helps you eat more "cleanly" if you may. Since the good ones dont have much calories, so you can better manage your macros.
If you eat "normal" foods and still hit your macros, its the same thing.

For me as an ovolacto vegetarian, it helps a lot since plant based proteins are hard to find/expensive.

So no, you dont need supplements.


Right now youre just hitting a plateau.
My max is 15kg right now too if that makes you feel any better.