IamSiri. Hard one to answer. Shame comes from so many sources outside of us. How we grew up, people we have known and still know. But, as you asked the question, Yes, I think it is unreasonable to be ashamed. Unreasonable but totally understandable. Been there myself many times. In a previous part of my life I had a great career, really well paid, then mental illness caused me to have to change to my current life, where our normal situation is hunting down the back of sofas and pockets for any change we might have missed. Telling friends we have something else on when they ask us if we want to come round for a meal because we dont have anything to wear that isnt awful and couldnt take anything as a "gift" for the host.
I first felt that shame as a child, when my parents took my sister and I to a school exchange for coats for the winter. The coats were way too big, sleeves below finger tips. Our father saying "its good enough for the likes of you" Shame is such a bastard, but ask yourself this. If someone else had asked the question, what advice would you give them? Go to a foodbank probably. So if our advice is good enough for others, why isnt it good enough for ourselves ? (I am the world's best at ignoring advice but give it out in lorry loads) It is a hellish situation to be in, it feels like it will never end but it can. (no magic solution but life does change, sometimes for the better, sometimes for the worse) Currently we are slightly less in shitsville, but it would take a very small change for us to be right back in it.
Poverty can be like depression, you convince yourself it will be easier to cope with if no one knows about it. Having had (and still have) both, it really isnt easier, in fact it perpetuates the pressure on you. I know its hard, but give yourself permission to get some help, that doesnt make you weak, useless, shameful or any other description you hear in your head. It is a reasonable response to an unreasonable situation and you will get support, if you ask for it.
Wishing you all the best, apologies to anyone who fell asleep part way through.