Young couple looks for a studio/apartment in Berlin

Hi there, I would like to find an apartment or a studio to share with my boyfriend. We both live in Berlin and work with regular contracts. We're a friendly, quiet and joyful people. We love being in touch with other people and spend some time knowing new ones. We love eating, listening to music, watching TV series and going out. We love nature and for this reason I'm trying to have a plastic-free life. We're respectful and we always keep our promises.
We're looking for an apartment or a studio in Berlin, max. rent 800 euros.
I can speak German, English, French and a little bit of Portuguese. My mothertongue is Italian. I've a bachelor degree in intercultural and linguistic communication. I already work in the service satisfaction in a famous restaurant in Berlin. My boyfriend has two jobs here in Berlin, he speaks really good English and Italian. Just a little bit of German. We both have regular contracts and all the necessary documents.