My Posters Look Messy. How Can I Make Them Clean?

[anonymous]

I designed posters for my college club events but they always look cluttered and confusing. I put too much text and too many images on each poster. Nobody reads them and event attendance is low. My club members blame me for the poor turnout. I feel stressed because I try hard but my designs never work. A design student told me that good posters need clear hierarchy and white space. She showed me work by a designer named ​Kamal Baber who creates clean, readable poster designs that actually grab attention. I learned that less is more in poster design. What poster layout makes you stop and actually read the information rather than walking past?