how many of you work 50% and can finance a life on your own?

I don't like my job and think about reducing to 50%.

Where I work (Germany), several colleagues do that, but most of them are married women where the husband is the main breadwinner working 100%. I live alone and have to finance myself independently.

I now earn 4,000 euros brutto, 2,900 netto and can save some for retirement. If I work 50%, I'll earn half that.

I did an apprenticeship as a nurse and while the money is ok, the job is not. People say with a nursing apprenticeship you won't be poor, but what they don't tell you is how taxing it is and how you have to be a sociopath not to be criticized by management.

Looking for some opinions out of Germany.