Two things.
Now you are talking about earning enough to fund further travel. That is a totally different thing from earning enough to sustain you in a place. Most jobs available to backpackers (ie. a bar in Greece) pay barely enough to live on, not enough to save additional funds from. So base your plans and expectations accordingly. it is fine to hope to find work to extend your time in a place but it is foolish to count on finding work to fund further travel.
Second, I am all for an adventure with no plan beyond a ticket to A. I am not in favour of a planned tour at all. Adventure by definition requires two things. Risk and the unknown. Therefore, by definition you cannot plan an adventure. So don't think I am suggesting differently.
What I am suggesting is a starting point. ie. Go to Greece, look for work, see what happens. That's as far as it goes. I wrote that if that worked out you could then travel back towards home on your funds. If you did that and nothing happened, you would have a nice year. But it also leaves it totally open for the unexpected to happen.
For example, I went to a Greek island expecting to spend maybe 7 days seeing the island. I stayed for 7 years. But obviously someone else may have (and no doubt thousands do) come to the same island and left after a week because nothing happened to make them do otherwise.
What no plan for tomorrow but the funds to get home does for you is leave you open to opportunities. Nothing guarantees anything will happen but if you have no plan/itinerary/committments to fulfill, then nothing stands in the way of you taking up an opportunity if one comes up. But it would be foolish to do that and not have the money to go home. That's just being sensible and realistic. Don't expect anything and you will never be disappointed.
My point is you are writing as if you expect things to go a certain way. They may or may not. Don't expect anything beyond getting to A and having enough money to get back home. Otherwise, you'll head out, look for work, not find any, run out of money and go home disappointed. See what I mean? In your home country I believe it is called 'Sod's Law.' In my country it's called, 'Murphy's Law' and in any country it's called, 'what can go wrong, will go wrong'.
Nothing can go wrong if you have no expectation. You wrote asking for help regarding finding work etc. Suppose instead your thinking is this. I'm going to save as much money as I can by next May, buy a ticket to A and see what happens from there. That's it. Now what is there in that you would need help with? Answer, nothing.