U need 2g protein/kg u weight.
If u need protein shakes to meet that, then take your protein shakes.

No, I mean a 75kg person will need consume 150grams protein/day for optimal muscle gains.

For weight gain, you need a caloric surplus. A 300 calorie surplus is good starting point.

All kinds of retarded bro-science nonsense advice in this thread.
Reminds me why I avoid talking to Anyone in tis country about fitness.

1. Download MyFitnessPal.
2. Use it to plan a diet that has 300 calorie surplus & meets 2g/kg protein requirement.

4. Use this https://tdeecalculator.net/ to know your TDEE.
5. Google learn what is calorie surplus if you dunno.

There is no such thing as "correct" food for bodybuilding.
Avoid processed & oily food for your heart health.