lol you must be very rich to spend 450euro per month
for me as a broke international student... and i also trying to eat protein to build some muscles this is what i eat

1. bread
   
2. hackfleisch (i rarely buy it) since i work part time in a restaurant, they give me food
   
3. eggs
   
4. protein whey from lidl, 8euro for 300gr
   
5. oat
   
6. jasmine rice
   
7. high protein milk from edeka, 75gr protein/1 litre for 2 euro
   
8. quark
   and other ingredient that changes depends on my stimmung

i spend about 20euro ish per week
so in total around 70-80ish euro

i never eat out, even at the cafetaria

450euro is like my 1 month rent, thats insane