How healthy is this eating plan?

Me: female, 20, 184cm, 87kg Goal: lose weight, get healthier+ fitter

What I plan to eat in a day (roughly) and have been eating yesterday+today and I feel I could keep going like this so I’m looking for reassurance that it’s a good plan:

• Joghurt (250g roughly) + 1/3 bag of frozen mangos+blue berries/strawberries/other frozen fruits (enough that every spoon of Joghurt has fruit)

• 195g tuna fish (one can) + ~170 kidney beans (half of a can) + 140g corn (half of a can) + one fresh avocado with pepper/salt/olive oil + one fist/handful of different nuts.

• in the afternoon/evening: 2-3 big oranges, and maybe additionally a bowl of Müsli/porridge with non-processed cacao and Joghurt.

What do you think? Do these have all nutrients that my body needs? I might add a baked fish for the evening and eggs. But otherwise for the last two days this “diet” worked really well for me. I prepare the first two dishes in the morning and eat while studying. I try to eat all of it in the morning for “fasting” so naturally make myself less hungry, but I don’t dare to strictly fast now because it always made me too anxious when I tried in the past. It’s important to have a lot of food available becuase I binge otherwise. The last dish is for when I am hungry in the afternoon/evening so I really feel like I can eat whenever and whatever and as much as I want (2 oranges do the trick already). The only thing I’m not sure about is if the above diet puts me into a caloric deficit (I am questioning this because I didn’t feel hungry yesterday or today). I also started taking vitamins (D3, B12, Magnesium, Calcium) in the mornings, maybe that makes a difference, too.