Catch phrase po iyan
Catch phrases” are the same as cliches, so don't use them. There is no such thing as a “good” catch phrase in quality writing. However…
You may actually be asking about writing a good “hook” for your essay, meaning you want to “catch” the reader’s attention. If so, there are a number of literary devices you can use for that first line
a word or expression that is used repeatedly and conveniently to represent or characterize a person, group, idea, or point of view.