so today I play Minecraft with my friend after backup complete few minutes later server crashed, then I check world backup on my google drive I restore the world, but when I logged on, the world is still same as we started playing, but item inventory restored properly,only world building not restored

You probably configured the backup-list wrong. Here is an article describing how to configure it.

my backup setting:

DriveBackupV2 - by Max Maeder (MaxTheGinus)

delay: 60
backup-thread-priority: 0
keep-count: 10
local-keep-count: 0
zip-compression: -1
backups-require-players: true
scheduled-backups: false
schedule-timezone: -00:00
backup-format-timezone: -00:00
backup-list:

• path: world
  format: '''Backup-world-''yyyy-M-d--HH-mm''.zip'''
  create: true

• path: plugins
  format: '''Backup-plugins-''yyyy-M-d--HH-mm''.zip'''
  create: true
  dir: backups
  destination: backups
  googledrive:
  enabled: true

  I don't think its wrong, because I never touch it