Can you build strong muscles with moderate protein?

(This is opinions and internet research, not expert health advice).

Can you build above average strength with good looking muscles?

Can you do it on something like 0.5 grams of protein per lb of weight? I weigh 200 lbs. Even getting 100g of protein a day seems like a chore.

Can I build strength on 100g of protein a day?

Can a 150 lb man do it on 75g a day?