Look for friends to Trekking & Climbing & Campping together

Is there any friends planning to organize an activity to go hiking, climbing and camping in the following two months? Thanks for the 9 € ticket so that we can travel to anywhere in Germany.... I also hope to meet like-minded friends.
We are students in Berlin (without income, therefore we prefer low cost activities, while expensive activities may not be affordable).
If you have any interest, welcome to visit my (also and her) profile, and feel free to contact us!
One note, we are new here and can only speak English right now. Both of us will learn German afterwards.
Thank you and best regards.
Jim