The Jujutsu Kaisen anime has covered certain key arcs from the manga, but it's not caught up completely. You'll have to read the manga for the full story.
The manga pick-up point in Jujutsu Kaisen varies depending on your progress. Generally, it seamlessly progresses from one story development to the next, maintaining a coherent plotline.
The Jujutsu Kaisen manga is indeed ending. It's been a great run, but all good things must come to an end. The final chapters are bringing closure to the characters and story arcs.
The Jujutsu Kaisen manga has reached its conclusion. The story came to a close with a satisfying ending that wrapped up the plotlines and character developments.