Why did Mike Williams retire from NFL at 30? The real reasons behind Chargers wide receiver's sudden exit

Mike Williams, the Los Angeles Chargers wide receiver, has retired. He is 30 years old. His agent informed the team's general manager. Williams signed a one-year deal in March. He was placed on the physically unable to perform list. Injuries plagued his career. Justin Herbert and Derwin James praised Williams. The Chargers signed Ryan Nelson from the UFL.