HOLLAND — Avery Rios’ smile lit up a room. He loved building and racing cars and working with his dad. He was smart, kind and respectful.Now, Avery’s father, John Rios, is mourning his son’s death from an accidental fentanyl overdose.Avery, 20, died in September 2020. He struggled with depression for years, sometimes becoming suicidal.Though his family tried repeatedly to help Avery, he would sometimes self-medicate to lessen his depression with drugs he bought on the