I have installed Advanced Download Manager (ADM), but when I try downloading a file from Chrome, it downloads the file with its Chrome download manager.
How to set-up ADM to intercept the download link on Chrome?
Normally ADM should be able to intercept downloads automatically provided its service is running in the background.
You can check if the setting is active here: ADM Settings → Automation → Autostart service (tick box).
Secondly make sure it is activated for both mobile and wi-fi networks ADM Settings → Automation → Only via wi-fi (untick)
Also here, you need to fine tune the settings for download interception such as enabling the option when battery is low, and excluded the app from battery optimisation.
In addition to the recommendations made in other answer, do note a few things:
Apps which depend on Android's activity resolver (to show chooser dialog or "Complete action using" by sending an implicit intent) can forward downloadable links to ADM (and other apps which register preferred activities as downloaders).
Apps can also query available activities for a certain intent (action, path and/or mime) type and then send explicit intent to an app chosen by user. E.g. Firefox looks for system's preferred activities for a given URL and mime type and maintains its own download preferences for all mime types.
ADM - in its
AndroidManifest.xml file - registers itself for
https, all mime types and a long list of file extensions. So do other apps like MiXplorer and Firefox itself. Therefore they appears as eligible candidates when (an app through) OS looks for a downloader/browser.