Hi primalgirl. I think it's great you have discovered primal at this stage in your life.
I am kind of glad I didn't know about primal when I was on a tough budget, in those days I made tons of bread and based all our family meals around rice and pasta and potatoes.
You have made a good start cutting out junk, sugar and grains but you will get very hungry if you cannot get enough protein and good fats. Grilled chicken breast sounds like a good choice to add to your salad - are you allowed to do that? Can you bring your own olive oil to pour over it if that is not supplied?
A fun recipe my daughter does in the microwave is chocolate mug cakes - put into a large mug 1/2 a banana, one egg, 1T cocoa and 1t vanilla essence. Blend it all with a stick blender then microwave in 30s bursts maybe 3x till cooked through. Eat with a spoon straight from the mug. You can add whipped cream too.
Real ingredients do cost money but they don't actually cost more than junk products. Many primal foods especially salads do not actually need to be cooked, just "assembled".
For example, breakfast could be berries with Greek yoghurt, sprinkled with flaked almonds. No cooking required.
Do any of these suggestions help?