Any advice at the moment would be great, cos I'm really running out of ideas.
Go to German school. That has to be your top priority. Find an intensive course. It does not take much. The unemployed people I did one with were in commodity work within several months (shops, food outlets etc). All of them - no exception, right through to war refugees with limited education. We see each other round town now and everyone's busy getting on with stable integrated lives, working, settling down, building families etc. But with no German, a lot of immigrants were nowhere. Just like you.
Some of my clients have factories and, guess what? As they are in Germany, they run entirely in German and so employ German speakers! Furthermore, a lot are science / technical / engineering concerns, it's not unskilled labour that anyone can just pitch up and do when it suits them - you need a scientific or engineering education. On top of that, a lot are hardly in a position to recruit in the current economic climate (read the press - the opposite is happening). Warehouses might be a slightly different proposition.
The cafes round here tend to be staffed mainly by immigrants.....but they all have to speak decent German of course.
There are lots of architecture graduates in this area. Not only Germans but a lot of highly-educated bilingual East Europeans too. They can also find work.....but often not in their field. Even a lot of German graduates are struggling right now.
You don't mention a work permit / visa status by the way.