This is a link to a flow I created that will make it easy to launch rclone on an Android device either adhoc or on boot.
https://llamalab.com/automate/community/flows/28360
Automate: https://play.google.com/store/apps/details?id=com.llamalab.automate
More ellaborate flow that stores history of what you've ran so you can quickly fire them off again or use them as a base for another command.