Is there a way Choy Lay Fut can beat a grappler?

Your best bet is to crosstrain in striking and grappling styles, I myself am unfamiliar with the art itself but as someone who has wrestled both in HS and in College, done submission grappling tourneys, competed in kickboxing and MMA. I can tell you 1st hand that developing well rounded skills is important to your growth as a well rounded martial artist. By all means go ahead and pursue CLF but take up some others as well to broaden your skillset. Every style strengths and weaknesses