Guzman excelled as a defensive back for Coach Brett Froendt at Omaha Westside High School. Guzman helped the Warriors to a 9-2 record and a trip to the Class A state quarterfinals in 2018. Guzman earned honorable-mention all-state recognition by both the Omaha World-Herald and Lincoln Journal Star as both a junior and senior. His play as a junior helped Westside to an 8-3 record, and he was also named to the second-team All-Metro team by the Omaha World-Herald. Guzman, who also plays baseball, chose Nebraska over several Division II scholarship offers.