Paper is good if you are solo. I tried Notion, waiting inside the grocery store 30 seconds for it to boot up or load or update or whatever on mobile, gave up on

Paper is good if you are solo. I tried Notion, waiting inside the grocery store 30 seconds for it to boot up or load or update or whatever on mobile, gave up on it for day to day tasks. Google Keep is still king. Am I going to be able to consistently pull down a text file from a server on mobile? How will I share a paper shopping list with others? What cheap hosted service should I be using that lets me CRUD my text files on mobile + desktop and share with others?