Hey guys, me again. Right now I am in Amsterdam...and about to eat some SpaceCake with friends

and soon I am moving on to Hamburg. Problem is, I don't know anyone there so its not much fun staying somewhere alone. I realized I don't need places to stay as hostels are plentiful, but I would like someone to chill with/play some magic/show me around, etc.
Places I am looking to visit are as follows:
Germany Hamburg - Need someone
Switzerland - Around Bern -Need someone
Hungary - Around Budapest - Need someone
Romania - Around Bucharest - Need someone
Bulgaria - Around Sofia - Need someone
Greece - Around Athens - Need someone
All the other places I have accomadations at, so its not a problem. Travelling alone is okay, but exploring by yourself is different, its hard to see everthing if you have nobody that speaks the local language/can show you around.
Anyways, I thank everyone in advance and I hope someone can help me out, thanks!
I will have net access for 3 more days, so quick responses will be very helpful
