That sounds like something I would be interested in. So I googled walks in the Black Forest and ended up at the Black Forest tourism website. Linked to this is a blog called Easy Hiker, Adventures for Beginners. Here is how they describe their methods of selection:
In this blog, they feature a variety of easy hikes and urban walks that they’ve chosen and done themselves for you to try and enjoy. Hopefully, the trails they feature here would help you, Easy Hikers, choose your trails wisely so you get the best bang for your time and money.
Follow the navigation on the blog: Europe>Germany>Black Forest, and you come up with descriptions of hikes/walks. Check it out. You may find something you like. I am going to bookmark for weekend reading. Thanks for posting this question!