The Germans host Peru on Saturday before taking on Belgium on March 28th in their international friendly matches this month.
Germany, who suffered their second consecutive group-stage World Cup exit in Qatar in December, are eager to lay the foundations this year for a successful tournament in Germany in 2024.
Coach Hansi Flick (58) has called up six newcomers with Brentford's Kevin Schade (21), VfB Stuttgart's Josha Vagnoman (22), Mergim Berisha (24) of Augsburg, VfL Wolfsburg's Felix Nmecha (22), AC Milan's Malick Thiaw (21) and Borussia Dortmund's Marius Wolf (27) while opting to leave veteran Thomas Muller (33) out.
"We are at a stage where we now need to develop as a team and I want to be part of it," said Fullkrug, who made his debut in November 2022, days before the World Cup in Qatar.
"In the first training sessions this week it was all about integrating the new players and to refresh our philosophy," he added.
"The coaches analysed things well, they showed where the mistakes were (at the World Cup). We have discussed many things and hope to show them to you in the next two matches."
Germany, four-time World Cup winners and three-time European champions have crashed out early in their three most recent tournaments, including Euro 2020 in 2021 where they lost to England in the last 16.
As hosts in 2024, they do not need to qualify for the tournament but they want to prepare a team in the next 15 months that can again become competitive on the international stage, starting with their friendly matches this month.
"We have to find our plays relatively quickly, get a starting 11. It is a balancing act that we need to do. But I am confident we will make it," Fullkrug said. "We want to start well, we want to win."
