> One thing in Berlin ist crucial: Social Proof

Then work on that. Or try to partner with someone who has that

How? Mingle. Go to meetings. Network "horizontally" (in your tech segment) and "vertically" (in your business segment).

One way you're not getting that is by being the foreigner just off the plane (or even there for a couple of years) that can't speak German

There's actually a funny series of bilingual books about "How to be Berliner/How to be German" that are kind of tongue-in-cheek but it gets on the overall mindset

And as someone said below, something like < 100k can be gotten from FFFs, so look onto that.