Why is the German economy struggling?

As a 50-year old economist, it seems odd to be writing that Germany is the "sick man of Europe" but it seems that this is where we are. The German economy is growing at a slower rate than the UK, and it seems that the government is struggling to fix it.

This article from the Guardian raises some important strains facing the German economy.

It seems that Germany is suffering from a range of structural issues: an ageing population, low levels of investment and declining infrastructure as well as the limited role out of digital services all mean that the economy might be the only G7 member to shrink in 2023.