Construction costs are currently skyrocketing

Yes, because it is true. You need luck in life. Luck to be born into the right family. Luck to find a good job. Luck to have the right aunt with a yacht who supports the house construction. Luck to have built before the interest rate increase and the absurdly high prices. All factors that you can only partially or not at all influence. But should one be ashamed of this luck? No, certainly not. However, one should of course be grateful if one can look well into the future and has had the necessary luck so far in life. And equal opportunity for all will not be achieved. I gladly admit that. But how could it be otherwise? It is clear that children study more often if they know it from their parents' home or are encouraged to do so. You will never completely get rid of that. But unlike in the USA, university here does not cost a fortune but is affordable for everyone. And thankfully there is social advancement for many from families where it was not possible to study before, who today are the first in their family to study.

Try searching for disposable pallets on classifieds. They are even sometimes given away for free.

Typical stove owner, burning everything combustible down the chimney. However, such waste incineration actions are prohibited under the Federal Immission Control Act, so bad advice. Even in times of crisis, please do not trade the health of your neighbors for a few saved euros.