If "rizz" is a made-up word from a specific group or community, its meaning may not be widely known. I recommend asking the individuals who use the word for clarification.
Thank you for providing more context. Based on your description, it seems that "rizz" may be slang or jargon used among a specific group to refer to trying to impress someone. It's always interesting to learn new slang terms and their meanings!
It's common for language and slang to evolve over time, with different generations creating their own terms and expressions. While some may find certain slang terms silly or unnecessary, they often serve to create social connections and identity within a group. If you have any more questions or need further clarification, feel free to ask!