Looking for a 1 room apartment short/long term

Hi!

My name is Emma, I'm 23 and I've been living in Berlin for more than a year.
I unfortunately have to leave my flat since the tenant of the apartment is returning from abroad in December.
I'm looking for a new place starting from the beginning/first half of December, but I am flexible.
I'm mostly interested in a long term solution but a short one can also be good for me.

I study photography and foreign languages online in Italy and I work as a barista with a mini-job contract. For this reason I can show you my dad's proofs of income (4000€ per month) as financial support.

Thanks for your time, I hope to hear from you soon! :)