Don't worry OP, I'am the third participants
Here are my predictions of Oscar 2020 winners:

Best Picture: 1917 – Sam Mendes, Pippa Harris, Jayne-Ann Tenggren, and Callum McDougal
Best Director: Martin Scorsese – The Irishman
Best Actor In a Leading Role: Leonardo DiCaprio – Once Upon a Time in Hollywood as Rick Dalton
Best Actress in a Leading Role: Cynthia Erivo – Harriet as Harriet Tubman
Best Actor in a Supporting role:Brad Pitt – Once Upon a Time in Hollywood as Cliff Booth
Best Actress in a Supporting role: Scarlett Johansson – Jojo Rabbit as Rosie Betzler
Best Original Screenplay: Parasite – Bong Joon-ho and Han Jin-won
Best Adapted Screenplay: Joker – Todd Phillips and Scott Silver based on the characters created by Bill Finger, Bob Kane, and Jerry Robinson
Best Foreign Langage Film: Parasite (South Korea) in Korean – Directed by Bong Joon-ho
Best Documentary Feature: The Edge of Democracy – Petra Costa, Joanna Natasegara, Shane Boris and Tiago Pavan
Best Animated Feature: Toy Story 4 – Josh Cooley, Jonas Rivera and Mark Nielsen
Best Documentary Short: Learning to Skateboard in a Warzone (If You're a Girl) – Carol Dysinger and Elena Andreicheva
Short Film Animated: Kitbull – Rosana Sullivan and Kathryn Hendrickson
Short Film Live action: The Neighbors' Window – Marshall Curry
Music (original Score): Star Wars: The Rise of Skywalker – John Williams
Music Original Song: "I Can't Let You Throw Yourself Away" from Toy Story 4 – Music and Lyrics by Randy Newman
Best Sound Editing: Joker – Alan Robert Murray
Best Sound mixing: Ford v Ferrari – Paul Massey, David Giammarco and Steven A. Morrow
Production Design: The Irishman – Bob Shaw; Set Decoration: Regina Graves
Best Cinematography: Joker – Lawrence Sher
Best Makeup and Hairstyling:Bombshell – Kazu Hiro, Anne Morgan and Vivian Baker
Best Costume Design: Little Women – Jacqueline Durran
Best Film Editing: Ford v Ferrari – Andrew Buckland and Michael McCusker
Best Visual Effects:Avengers: Endgame – Dan DeLeeuw, Matt Aitken, Russell Earl and Dan Sudick