I saw Lautaro confessing after the match that in that first great chance he was going to one-touch it but changed his mind quickly. To me it indeed looked like a chance you should one-touch.
I wouldn't be worried about Lautaro. He's not a clinical finisher so it is what it is. Strikers can be world class despite not finishing clinically. He will learn from these aswell and will probably be a better finisher tomorrow than yesterday.
In general, agree with
@brehme1989 that people need to take chill pills when it comes to players missing chances. Good teams can create tons of chances and they don't win every match 5-0. That's football.