It can be assumed that Hagrid kept in contact with the trio after the war. By 2017 he was still living, and presumably still teaching and tending to his gamekeeping duties at Hogwarts.
Hagrid does not play much of a role in deathly hallows due to several reasons. Firstly, Dumbledore is dead and there aren't many others who trust him. Secondly, Hagrid's main purpose was giants and other creatures but any creatures who could fight and didn't want to be neutral were recruited by voldy.
Maxime was also seen comforting Hagrid during Albus Dumbledore's funeral. The current status of their relationship is unknown, but as Hagrid never got married, it can be assumed that their relationship did not work out. However, they likely remained good friends.
What happened to McGonagall after the Battle of Hogwarts?
Epilogue. After the war ended, McGonagall was fully instated as the Headmistress of Hogwarts and was awarded the Order of Merlin, First Class by new Minister for Magic Kingsley Shacklebolt.
You will be sent to Azkaban if you use Avada Kedavra on students - Hogwarts Legacy
What happened to Umbridge after the Battle of Hogwarts?
Dolores Umbridge was eventually imprisoned in Azkaban due to her crimes against Muggle-borns during her interrogations, as not everyone she interrogated and tortured survived.
What happened to the Malfoys after the Battle of Hogwarts?
Because he and his family defected from the Death Eaters they were pardoned for their crimes after Voldemort's final defeat and did not serve a stint in Azkaban. He and Narcissa later had a grandson, Scorpius Malfoy, after Draco married Astoria Greengrass.
Rowling revealed more information about Neville when she stated that he married Hannah Abbott, a Hufflepuff classmate, who became the landlady of the Leaky Cauldron. The couple live over the pub, a fact that Rowling thought people would find "particularly cool".
In one scene, Aragog, the Acromantula tells Harry that he came to Hagrid "from a distant land, in the pockets of a traveler." This means that Scamander and Hagrid knew each other after the former traveled around the world to study, collect and learn everything about fantastic beasts.
Dumbledore never married, but had romantic feelings towards his childhood-friend-turned-enemy - Gellert Grindelwald. The two were inseparable for a bit of time, but sadly Grindelwald turned to the dark side, and Dumbledore had no choice but to take the one he loved down. He never pursued another after that.
Honestly, Hermione knew Dobby was a lost case... nothing could have revived Dobby after the attack or she would have definitely helped Harry with Dobby considering she was the girl who started S.P.E.W(Society for the Elfish welfare) and fought for elf rights. There was nothing to be done at that point.
Notably, Voldemort appeared to be entirely unaware of this split, as he later created a seventh Horcrux in his quest to have six, and continued to target Harry Potter despite him now holding part of Voldemort's own soul.
On 31 July 1991, Rubeus Hagrid, despite being forbidden to perform magic, attempted to transfigure Dudley Dursley into a pig, after his father Vernon Dursley had crudely insulted Albus Dumbledore at the Hut-on-the-Rock, but only managed to give him a tail.
Family. Snape's family background is mostly shown in flashbacks during the course of the last three novels. Snape was born to Eileen Prince, a witch, and Tobias Snape, a Muggle, making him a half-blood (hence the name, "Half-Blood Prince").
Newt kept his wand, and Hagrid was allowed to stay and work on the grounds as a close confidant to the headmaster. Considering the similar interests the two share, Newt gifting Hagrid the Acromantula would make sense as they were kindred spirits.
Hagrid raised Aragog from an egg as a Hogwarts student, keeping him inside a cupboard. In his third year at Hogwarts, Hagrid was caught talking to Aragog in the dungeons by Tom Riddle, who alleged that Aragog was the "Monster of Slytherin", and that Hagrid had opened the Chamber of Secrets.
Newt would go on to marry Porpentina Goldstein, an American witch, and together they had at least one child, presumably a son. The Scamander family was "not impressed" by Newt's career in Magizoology. Rolf Scamander, Newt and Tina's grandson, married Luna Lovegood sometime between 1998 and 2011.
He actually asked the Sorting Hat to place him in Hufflepuff, as he was intimidated by Gryffindor's reputation for bravery, but the Sorting Hat didn't agree. They debated it for so long, that he was close to being what is known as a Hatstall, which is a term for any student whose Sorting takes longer than five minutes.
In Harry Potter and the Deathly Hallows Part 2, Neville is actually the person who destroys Voldemort's last Horcrux in Nagini, rendering him mortal, meaning that he and Harry truly delivered the final blows to Voldemort.
While they never officially dated or anything that serious in Harry Potter, there was some potential between Hermione and fellow Gryffindor Neville Longbottom. Neville actually asked Hermione to the Yule Ball because he said she was always helpful and nice to him.
In fact, Lucius' own support to Voldemort is revealed to come only under some form of duress, which is likely Narcissa's Veela Allure. When Lucius turns on Voldemort due to the reveal of his Horcruxes, Narcissa divorces him, taking 75% of Malfoy's wealth with her.
