afaik there is no formalized process to sell for winding down a company in germany as in sweden, though some attorneys offer a service to connect with some clients that want to start a company and try to do a swap, which is legally a grey area. I did that also once but it was a nightmare in a differnt way and took not much less time and energy. I am sure you can be lucky there if the timing is right and the people taking over are not complete idiots but it took still 1.6 years until everything was completely over. Only (maybe) worth it if the people taking over are totally vetted and the company they want to run is similar enough to the old one so the trigger for "wirtschaftlichen Neugründung" does not take action, otherwise they have to basically do the same as founding a company from scratch and it makes no sense financially.