Personal Liability Insurance
In Germany, you are personally liable for any damages caused by you to a third party (i.e., anyone outside your family or household). Most people take out personal liability insurance to cover themselves and their family/household, so that they are insured against claims if they accidentally cause damages to another person or their property.
Your liability insurance plan should cover all personal liability both in your private sphere as well as while at work.
There are a variety of insurance companies that offer personal liability coverage.
To help find the best one for you, you might consult product comparison websites.