In the Battle of Berlin, there were few defenders in Berlin. Where have all the other Germans gone?

During the Battle of Berlin, most of Germany was trapped in other countries and could not get away.

At that time, there were 800,000 guerrillas led by Yugoslav Tito, who contained 300,000 German troops and eventually destroyed them. Yugoslavia is the only country that won alone.

Germans in France are restrained by the French Freedom Front led by Charles de Gaulle, while hundreds of thousands of Germans are trapped in Romania and 200,000 Germans in Austria are besieged ... So there are still 3 million troops in Germany, who are actually isolated and besieged.