One option is to use X-plore, a seriously well featured file manager app for Android. If both devices are on the same wi-fi network, which I pretty much always am when I need to do this, in a couple of taps you can use its "WiFi file sharing" mode which lets any device with a browser address a file manager, view and download files. The docs don't really do it justice - https://www.lonelycatgames.com/docs/xplore/wifi-share/in-web