What did Harry Potter's friends do after Harry Potter and the Deathly Hallows?

Answer 1

Hermione went back to Hogwarts to finish her 7th year, married Ron, and she eventually became Minister for Magic. Ron eventually worked with his brother George (who married Angelina Johnson and had a son named Fred) at Weasley Wizard Wheezes. Hermione and Ron had two children, Rose (the eldest) and Hugo. Luna married Rolf Scamander, Newt Scamander's great grandson. Neville Longbottom became the Herbology Professor after Sprout left and he married Hannah Abbott, and she became the landlady at the Leaky Cauldron after Tom left. Ginny, of course, married Harry, but also went on to play Quidditch for the Holyhead Harpies. After her career was done (at least 19 years later) she became an editor for the Daily Prophet. Harry and Ginny had three children, James Sirius, Albus Severus, and Lily Luna. Draco Malfoy (if you consider him a friend) married Astoria Greengrass, who died not long after their son Scorpius entered Hogwarts. Oliver Wood was signed by Puddlemere United when Harry was in his 4th year and was presumably still playing after Deathly Hallows. Slightly off-topic, McGonagall became Headmaster and stayed at Hogwarts until at least 2020, and Kingsley Shacklebolt became Minister for Magic right after the Battle. Lastly, Harry himself became an Auror for the Ministry of Magic. Hope that helps.