import seaborn as sns

sns.countlot(data=df, x='churned' ,hue = 'gender') 

enter image description here

With this you can't you stacking

But you can do the same thing, plus stacking with histplot. Hist is usually used for numerical variables, but it does counting so it will do a job

sns.histplot(data=df, x='churned', hue='gender', nultiple='stack')

enter image description here