How to make friends in Hamburg, March 2018

Dears,
I will be visiting Germany (particularly Hamburg and Berlin) for a couple of days. I would be really happy to hangout with new friends there from different nationalities and culture. Are you interested? Just PM me in order to sort out how will me meet there.
Thanks,
Ahmed.

Did you try to meet people through Meetup, Facebook, Couchsurfing or other social networks?

No I haven't, are they effective and time saving websites?

Meet up is very good because it's whole purpose is to help people "Meet Up".

I have downloaded the app, working on building my profile now! Thanks guys.