I didn't know of the football situation in Germany, I imagined that they had some young promises to compete in the next world cups, but I believe it will be difficult for us to see a Germany like 2014 world cup.
Regarding Brazil, unfortunately they don't have a new star to replace Neymar, they have good players and that's true (Raphinha, Vini Jr, Casemiro, Richarlison and others).
The Brazilian national league (Brasileirão/Copa do Brasil), it is weak compared to European teams, but there are good teams that always stand out in Libertadores and Sul Americana, Sao Paulo, Palmeiras, Flamengo, Corinthians, which are some examples.
Yeah, but that's the thing, any good player from Brazil will end up playing at the European competitions, and not playing in their local teams.
Maybe when they are really just starting, but scouts are all the time having a look and if they find a good player, they will grab them and ship to Europe as soon as they can.
Also, the earlier they sign them, they can get away with paying them less money.