On a creating a clincher for my conclusion paragraph on my essay? or clincher examples?

my topic is about the negative and positive effects of video games.

within it i discuss the possible disadvantaging lifestyle (sleep deprivation, health risks, etc)

i also discuss how it may be a good educational use (using strategy and logic, provides life such as how irl events may need the assistance of hand-eye coordination, etc)

therefore, can anyone me out? i have my conclusion paragraph complete, yet my instructor advised me how there's no clincher included. i have looked at two other examples, but don't know how can i fit a clincher decently in mine. ? ?