Why does everywhere seem to have a housing crisis at the moment?

Obviously not everywhere (Japan seems free of such issues not to mention lots of rural regions) but I can't open a newspaper these days without reading about house prices in most wealthy countries or cities being too high, especially post Covid.

Most of the explanations I read about are focussed on individual countries, their policies and responses, not the global trend.

Is there a global trend or am I reading into isolated trends and articles too much?