Got him an iPad for schoolwork and now it's become a toy

Started with good intentions - bought my 9yo an iPad Pro for art class and to do research for projects. Guess how long it took before he figured out he could download game apps I didn't know about? Found him playing some sketchy racing game at 11pm on a school night last week. I'm so frustrated because tech was supposed to HELP with school not become a distraction. Maybe I'm not cut out for this generation's parenting tbh