Before I get downvoted, I want to explain why I feel this way. Please feel free to argue with my points. Being open to hearing criticism about your favorite anime can help you appreciate it more.

Firstly, I think Jujutsu Kaisen's pacing could have been improved by adding more arcs between the major ones, especially after the emotionally heavy Shibuya Incident arc. Transitionary arcs or character-focused mini-arcs could have allowed for reflection and processing of the events.

After the Shibuya Incident arc, the story's pacing seems to falter. The arc was dense, and transitioning into a slower phase felt jarring. The plot shifts between different characters and subplots, making it feel fragmented compared to earlier arcs. This is especially evident in the Culling Game Arc, which feels like it's taking too long to build momentum and lacks depth in new characters.

The introduction of many new characters and cursed spirits, some lacking the development of earlier antagonists, made the narrative feel disjointed and less cohesive. This led to a lack of investment in character deaths as the story progressed.

There was also a tonal shift after Shibuya, with the series feeling less emotionally grounded. The introduction of new characters and conflicts didn't match the emotional resonance of previous events, and the best moments in the manga became sparse and less emotionally charged.

Lastly, the ending felt cheesy and out of place, especially with the big reveal in the final moments of the arc.