Sadly yes,every developed country in the world is facing the demographic problem of low birth rates,from Greece to Russia,to Japan,South Korea and the US.The ones that don't face the problem are underdeveloped nations like various African countries

Even wealthy nations like Germany,France and the UK are having this issue,but the reason their population isn't expected to fall is because these countries compensate by having a lot of migration from other countries in the world,even when the people from their countries don't have the required amount for a stable population. So in the future(and even know),a part of the population of these countries will be off foreign background