I was unsure if I should start working out right away because I didn't want to lose more weight (I've lost 10 pounds). I feel like I can't even play sports anymore otherwise I'll lose weight.
Two slices of bread
Sardine or eggs
Rice with lentils or meat and veg
Rice with whatever I have above
Sometimes I have snacks like crackers.
A lot of walking, I'm a university student.
This is also on a good day some days I skip meals.
If you're losing weight from just walking around, it's obvious that you're not eating enough to support muscular growth.
College students are under serious financial pressure these days, so spending the money on the food you need might be a problem. Also, are you a citizen of the US, or do you live in another country?