This song by Avril Lavigne is in G.
These are the “cheat” chords I played…
Part 1a: G2 - D/F# - Em7
Part 1b: C2 - D4 - D
Part 1c: same as Part 1a
Part 1d: same as Part 1b
Part 2a: Am7 - G/B
Part 2b: C2 - D4 - D
Part 3a: C2 - Em7 - D4 - D
Part 3b: [...]
