People, especially adolescents, may have greater difficulty controlling their gambling behaviours if their coping skills are lacking. Victims of cyberbullying often use coping skills that are not ideal. The researchers examined differences in emotion regulation, coping strategies, and substance abuse among two samples of adolescents and young adults. The first sample was 31 young patients who were being treated for gambling disorder at a Spanish hospital. The second sample was a community sample of 250 adolescents recruited from secondary education schools in Spain. In both groups, exposure to cyberbullying behaviours was linked to worse emotion regulation. It was also linked to the use of maladaptive coping strategies. In the community sample, participants who experienced cyberbullying were more likely to use/abuse alcohol. In the clinical sample, higher cyberbullying was linked to lower gambling severity.