Question regarding the "Einzelunternehmer" vs "GmbH" topic: in terms of liability, going for the former seems a bit "optimistic" as you are personally liable, no? Depending on your business it might vary how high the dangers in this regards are, but for a SaaS business, DSGVO fines immediately come to mind.
I worry that Lukas is about to find out about the business end of the Umwandlungssteuergesetz: converting a Einzelunternehmen to a GmbH is a surprising amount of faff, and once you've done it you (normally) end up with a company you can't easily sell for 7 years without paying some pretty hard-core taxes. I got to do this whole dance early this year, and it took a big bite of momentum out of the little bootstrap I wa…
With regard to risk, the CEO of a GmbH is still personally liable for a lot of risks and liabilities including the social insurance payments of employees.
Also, all risks you can get insurance for you should get insurance for regardless of the form of the enterprise.
Agree that the UG is the worst choice since you are basically announcing you have zero savings behind and can generally not be trusted.
If you want to get more serious with your Einzelunternehmen, you could also consider becoming an „e.K.“ (eingetragener Kaufmann). Same tax rules but full HGB (Handelsgesetzbuch, special law that governs interactions between companies) applies.