Looking for an apartment

My name is Aman choudhary , I am 23 years old and have been in Berlin for 3 years now. I came here for my Bachelors in Psychology, which I am still doing. I work part-time as a Technical Recruiter for a German company. I live with my girlfriend in Mehringdamm at the moment. My girlfriend name is Riddhi negi , she is 21, studying Business & Economics. She likes to cook, play sports and is a hygiene freak. We are both studying and working so we are mostly busy on weekdays.

Everything at our current studio place is super awesome, except for the space issue. We are looking for Apartment which is much more spacious, in our budget, perfect distance from college & work and has a good neighbourhood in general. I really like the place and would like to get things started. We would be up for moving this April or may until at least an year or two (could extend, if we are still in Berlin after finishing college).

We are in process with the WBS since we are students we are positive we will have it soon.

Thank you so much again for your time :)
Best regards
Amandeep Choudhary