Still grew up in Sicklerville, New Jersey, and attended Timber Creek Regional High School, where he lettered in football, basketball and track & field.

[2] During his high school football career, he was named the Defensive Back MVP at the 2019 Nike Football Opening Regional-New Jersey and broke the school-wide record for the most receiving yards in a season with 71 catches for 1,541 yards.

[3] He was rated a three-star recruit and committed to play college football at Maryland over offers from West Virginia, Baylor, NC State, Wake Forest, Virginia Tech, Purdue, UCF, Duke, North Carolina, Pittsburgh and Syracuse.

[6] In the 2021 Pinstripe Bowl, Still returned a punt from Virginia Tech for a touchdown, which was Maryland's first points of the game.

[14] Against the Atlanta Falcons on December 1, 2024, Still recorded two interceptions including one that he took for a 61–yard touchdown, the first of his career.