AIt's best to get on a bike. Many will be there anyway, because Magdeburg is located on the Elbe Cycle Route. The trams are also making good progress. On foot, however, visitors will not be happy.
The reason is that the distances between the many sights of the elongated city are quite large. But also because the capital of Saxony-Anhalt is not exactly a shopping metropolis. Most residents seem to know that. They prefer to stay at home in the evening.