I’ve been tracking my diet using cronometer and it’s telling me I need more protein. This is for a week:
I eat meat once a week and fish once a week. I’d prefer not to use protein powder so I need to start adding some protein into my diet.
I’ve just quickly googled about recommended protein intake, it says for approximatley 1g to 1.5g per kg of body weight. If that’s the case I need even more 
Your daily protein needs:
For a non-exercising individual: Approx. 0.8g per kg of body weight.
For endurance athletes (like you): 1.2–1.6 g per kg of body weight depending on the intensity and type of training. Those training for ultra endurance or Ironman events or who are also doing regular strength and resistance training should aim for the higher end of this range.
Strength and power athlete: Up to 2g per kg of body weight
Protein and Training: All you need to know – British Triathlon