Topic for project work study?

Hey, I'm looking for a marketing or management topic for my project. I don't know what to choose. At first, I was thinking of something like "The influence of online advertising on students' purchasing habits," but I'm not sure. I'm also not 100% sure if the topic fits into the marketing field.

The lecturer I want to write with said I should choose a topic and then we'll take a closer look.

Does anyone here have any suggestions for what I could write my project paper on? As I said, it should be something related to marketing or management, and nothing related to controlling, please.

Thanks