Nagatoro Season 2's ending in the manga is a bit tricky to pin down. It sort of varies depending on how you interpret certain plot points. Maybe look for detailed manga summaries online to get a clear picture.
Yes. The Nagatoro manga reached its end, giving fans a sense of closure. There might be some mixed feelings among readers, but the final chapters tied up loose ends.
Sorry, I have no clue. The release of Don't Toy With Me, Miss Nagatoro Season 3 manga is still up in the air. Maybe it'll be out in the next few months or longer. We just have to wait and see.
Yes, the Nagatoro manga has ended. It might have left fans with a mix of emotions, but it provided a definitive conclusion to the tale that had been unfolding.