unfollow page/group/people from facebook's account automatically. simply run in javascript console.

detox.js

// 1.--------------------declaration--------------------------

// add pages/group/people to unfollow here.
const targetList = {
  "page_name_xxx" : "https://www.facebook.com/page_name_to_be_unfollow/",
  "group_name_xxx" : "https://www.facebook.com/group/group_name_url_to_be_unfollowed",
  "people_name_xxx" : "https://www.facebook.com/name_to_be_unfollow",
}
let offset = 0

// ----------------------------------------------------------




// 2.---------------go to Unfollowed page (Modal).-------------

function goToUnfollowModal(cb){
  let account_setting_btn = document.querySelectorAll('div[aria-label="Account"]'); 
  account_setting_btn[0].click()
  
  let level = ['Settings & Privacy', 'News Feed Preferences', 'Unfollow' ]
  let i = 0; 
  
  function task(level, global_idx) { 
    setTimeout(function() { 
      let nodelist = document.querySelectorAll('div[data-visualcompletion="ignore-dynamic"]')
      Array.prototype.forEach.call(nodelist, function(value, index) {
        let string = level[global_idx]
        let match = new RegExp(string, 'g')
        if (match.test(value.innerText)){
          value.children[0].click()
        }
      }); 
    }, 3000 * global_idx)
  } 
  
  while (i < level.length) { 
    task(level, i); 
    i++; 
  } 

  if(i == level.length){
    setTimeout(function() { 
      cb()
    }, 2000 * level.length )
  }
}

// ----------------------------------------------------------




// 3.---------------------unfollowing--------------------------

function unfollowing(){
  
  function unfollow(unfollow_target, unfollow_btn){
    for(let idx = offset;idx<unfollow_target.length;idx++) {

      Object.keys(targetList).map( target => {
        let _remove_trailing_slash = targetList[target].replace(/\/$/, "");
        let _target = new RegExp(_remove_trailing_slash,'g')
        if(_target.test(unfollow_target[idx].href)){
          unfollow_btn[idx].click()
          console.log('unfollowed = ', target) 
        }
      })
    }
    offset = unfollow_target.length
  }
  
  function scrolling(parent){
    parent.scrollTo(0,999999)
  }
  
  window.scrollInterval = setInterval(function(element){ 
    let unfollow_target = document.querySelectorAll('a[aria-label="Profile Picture and Profile Page Link"]'); 
    let unfollow_btn = document.querySelectorAll('div[aria-label="Toggle to follow"]'); 
    let parent = unfollow_target[0].parentElement.parentElement.parentElement.parentElement.parentElement.parentElement.parentElement.parentNode.parentElement
    scrolling(parent)
    unfollow(unfollow_target, unfollow_btn)
  }, 4000) 
}


// ----------------------------------------------------------




// 4.------------------run function--------------------------

goToUnfollowModal(unfollowing)
// clearInterval(window.scrollInterval)

// ----------------------------------------------------------