Hi Yousef,
This group in Berlin is also really great:
https://***.facebook.***/groups/1630802003874623/?ref=group_browse_new
They cook meals together every Saturday - there´s a barbeque tomorrow!
https://***.facebook.***/events/1697383757189939/
After browsing Facebook there are actually a lot of events happening this weekend (especially tomorrow).
https://***.facebook.***/events/270137076669300/
https://***.facebook.***/events/891361557641902/
https://***.facebook.***/events/238826749825660/
https://***.facebook.***/events/1617046835286384/
Unfortunately I have to work tomorrow, but the people from the Give Something Back to Berlin cooking group are super friendly! :)