It did not. Germany's percentage of gas use for electricity stayed mostly flat. In absolutely numbers it went down because of less electricity use. Energy Charts from Fraunhofer publishes this data [1].

2025 it was 49.5TWh

2010 it was over 66.4TWh

Coal use went down significantly.

[1] https://www.energy-charts.info/charts/energy/chart.htm?l=en&...