Nothing wrong with your food choice IMO. Any food will do. Casein or not won't really affect your diet.

But did you count your TDEE and calculate your daily calorie requirement? If yes, then go ahead with your diet and it will work. If not, you probably wasting your time posting your daily diet here. No matter what food you eat, if your calorie intake > your daily expenditures, you will still gain fat. No doubt about this fact.

As for your workout, glad that you did train leg. but just some advice that if you train each muscle twice per week, you should train ALL muscle twice per week to avoid muscle imbalance. You only train back once per week and i guess it is because you don't like it? Honestly, go with upper/lower split, full body split or PPL split. Always have more total number of sets for pulling movement than pushing movement. Trust me and you won't regret in future. Too much pushing movement in relative to pulling will cause some shoulder rotation.

Just my 2 cents.

So, you only consume 800 cal during your off day? Based on your stat, your TDEE should be around 2500-3000. Means you are eating at 1700-2000 deficit. That's so unhealthy. You will be losing fat at a unhealthy rate and probably you will lost most of your muscle gain. Go slower by eating around 500 deficit on everyday.

I can tell from your diet that you didn't even go learn the basics of nutrition and your diet sucks. If you didn't bother to learn those basics, no one can help you. You can't expect someone calculate everything for you and help you decide your food. Learn the basics and come back again to ask for more specific help.