To allow the background data usage for Chrome, you need to open the Settings > Apps > Chrome browser. But, if you have accidentally blacklisted the Chrome browser on the Data saver settings, you will get download errors.
Well, the data saver of Android is fully compatible with the chrome browser.
If your phone doesn’t have enough storage, then uninstall the unused app or clean up the duplicate files from your device. So, head to Settings > Storage and check whether your phone has enough storage or not. Not only on Chrome, but if your phone lacks storage, you will get download issues on other apps like Google Play Store. If your phone lacks storage capacity, then your download will be paused automatically. Once done, check whether the problem persists or not.
So, before trying any other methods, make sure to restart your Android device. Well, restarting the device can fix most of the problems, including the download stuck error messages.