Recc on microwaveable + hot water foods

Hello

Long story short; due to financial struggle, I had to move back home. Home isn’t the most greatest. It is invested in roaches. I don’t want to put anything in the fridge as they go in and out. As for my own room, I keep it as clean as possible. I only see a couple every so often.

I am running myself in debt by buying food for myself and saving half the food to split for the next meal.

I can get a stipend on $50 to buy food at Walmart. Kind of like ebt/snap but it is from school.

I would love to utilize the $50 and not just spend it on unhealthy snacks.

I would only keep the food in my room since it is the least infected. So my question is, what are some foods that is recommended that I can leave in my room or how to spend it more wisely and more healthy options.

I don’t have a mini fridge (& wont be possible) and the only thing I really use at home is the microwave and hot water dispenser. I don’t live with a kitchen, but kind of like a portable gas stove is how my family been cooking.

What can I get that’s microwaveable but also pantry storage safely? Any foods that just require hot water to heat up? Any ideas how to eat better/cook with my limited resources?

Thank you in advance! I appreciate all the help.