Before a file is downloaded in the Chrome browser, the browser asks if the download is desired, and the "Ask First" function can be enabled or disabled in the browser's web page settings.

Android 9 | LG UX 9.0
Auto-Download -  Open the  Chrome  Browser
Auto-Download -  Open the  Menu
Auto-Download -  Open the  Settings
Auto-Download -  Tap on  Site settings
Auto-Download -  Tap on  Automatic Downloads
Auto-Download -  Enable or Disable  Automatic downloads
  1. Open the Chrome Browser
  2. Open the Menu
  3. Open the Settings
  4. Tap on Site settings
  5. Tap on Automatic Downloads
  6. Enable or Disable Automatic downloads

LG Instructions