I know our situations are different, but I have been homeless twice, and the second time I was homeless for 6 years.
Food and shelter were easy to find because I had a desirable skill, fixing PCs.
I would get paid by having a meal and a sofa or floor to sleep on.
As long as you are useful and helpful wherever you are, you will find food and shelter.
Finding the first few jobs is tough, but once you can get recommended by someone it becomes easier.
The main thing is to stay or start from where you have connections because your problems will always follow you wherever you go.
I live near the southern most tip of the British Isles. The town Penzance is the end of the rail line.
People from all over the UK end up there as they try to get as far away from their problems as possible.
It does not work. It now a town full of misery and drugs worse than many of the places they came from.
I doubt you will find what you are looking for in this city or any other city, because you need to find it in yourself.
Yes a new start could be what you need, but only if you are the thing that changes. We have no power to change the world, we can only change ourselves, and by doing so then change the way the world works for us.
You keep reaching out to people online that cannot really help you, only offer advice or small comfort.
The only people you can get real help from are the people you meet, but you do not trust anyone and reject the help available from the institutions in your country.
You need to find yourself and what you are worth, and I have no idea what it may take for you.
For the last year of being homeless I joined a charity made up of homeless people that wanted to do something useful in exchange for food and a bed in an old caravan in a field.
People would donate furniture, bedding, kitchen equipment, TVs, and anything a home needs. We would distribute the stuff to people in need.
We were paid in optional donations, which after putting fuel in the trucks would feed us each week.
The old caravans were cold
used to see frozen flies fall off the ceiling) and the wind and rain would get in, but it was shelter.
Each day I had something to do and somewhere to be, and every day I knew we helped someone was a good day.
I didn't like everyone in the group, and some of my things were stolen, but my time there was not wasted. I learned things about myself and how strong I was physically and mentally.
Living in a hippy commune isn't something I imagine is for you, but maybe you can find a motivated group or charity that needs people willing to commit them-self for a while.