Honestly I would say Atalanta were a bit unlucky with all their hard work in this game, kudos to their performance.
Lookman world class goal past 3 defenders was amazing.

But on the one hand Napoli didn't come to lose. Conte is a coach who can do this with a team half the value of Inter, it seems Napoli are unstoppable.
Overall I enjoyed their performance. And for Atalanta the journey is still quite long, get up and start again with a win to continue the competition.
Right, Atalanta has experienced bad performance lately without victory in the last 4 matches and we can say they are no longer the main competitor to fight over the title, whereas before we knew Atalanta was very aggressive and consistent since the beginning of the season but for some reason their performance continued to decline. Now Napoli and Inter Milan continue to compete to take place in the first place and in the near future I am quite sure that Inter Milan can take over for a while because Inter Milan still leads in several aspects including goals and defense, if Inter Milan wins in the next fight they will be there.
Atalanta does seem to have lost their balance lately but they are still in the top 3 and cannot be said to be out of the title race because we don't know what will happen in the future whether Napoli or Inter experience a setback in several matches and Atalanta returns to the top of the standings again, the competition in the top 3 is still very tight Atalanta still has a big chance to restore the situation to its original state if they evaluate their mistakes and start improving their performance in the next matches to catch up.