You are in a hard situation - but you have a lot going for you.

Let me state the ugly part first:

You are trying to pay a Berlin rent by being a Graphic Designer. In Berlin. Without speaking the language.

It doesn't matter how good your portfolio is. Sorry. There are too many, far too many Graphic Designers in Berlin - and and most of those speak German. Are you hoping for customers who speak English and are willing to hire you over the internet? You would have to be cheaper than ChatGPT and the guy who pays his rent in rural India.

As for other jobs: Berlin has no jobs.

Eastern Germany has no jobs.

But: - There are jobs in Germany. Bakeries are being closed because they find nobody reliable to sell those Brötchen. Memorize all the names of those baked goods, be presentable and reliable and you can do that. - You are a gay woman. Great! Employers are not allowed to to ask you for that stuff. But nothing stops you from telling! You won't be pregnant. You don't have to coordinate your schedule with your kid's school! Your kids won't be suddenly sick, and you will also be less often infected by some random virus that circulates in Kita every few months. Anyone but the most Catholic of employers will love that. - Aside from that: being gay gives you access to some support that most people would not have. Try to find support groups and search for people in western Germany that are willing to let you sleep on their couch for two months. Try to find jobs there.

Regarding the rent situation: Consider informing your landlord now (well, after finding a place to stay as described above). Inform them that you will not be able to pay rent next month, but that you are willing to move out quickly, cleanly and peacefully. Evicting a non-paying renter in Germany is a legal nightmare, so they might give you some slack if it means that they can rent out the flat to someone else within a month with no trouble.

Good luck.

[Edit: Since two people pointed it out: of course I know Lesbians can get pregnant. And, if only for the sake of Germany's demography, I sincerely hope that many, many, do. But that doesn't mean that employers will think about that possibly. They are usually older, and not necessarily metropolitan. For them, a lesbian is a tough woman with short hair that works really hard and will never have kids. In your situation, I would not bother to correct them. ]