Hi Alaa,
I found some more options for German classes for you:
****://***.leipzig.de/jugend-familie-und-soziales/auslaender-und-migranten/migration-und-integration/deutsch-lernen/deutsch-lernen-leicht-zugaengliche-angebote/
There is a Sprachtandem in Leipzig and some people listed are looking to learn Arabic! Here is the list:
****://sprachtandem-leipzig.de/en/tandem/index.html?learn=ar
And last link is to a Sprachabend, every Tuesday at 20h. The address is:
Villa
Lessingstr. 7
04109 Leipzig
Viel Spaß,
Julia