YouTube Unsubscribe (YTUNSUB)

index.js

(async function iife() {
  const UNSUBSCRIBE_DELAY_TIME = 2000

  const runAfterDelay = (fn, delay) => new Promise((resolve, reject) => {
   setTimeout(() => {
     fn();
     resolve()
   }, delay)
  })
 
  const channels = Array.from(document.getElementsByTagName(`ytd-channel-renderer`))
  console.log(`${channels.length} channels found.`)
  const ctr = 0
  
  for (const channel of channels) {
   channel.querySelector(`[aria-label^='Unsubscribe from']`).click()
   
   await runAfterDelay(() => {
     document.querySelector('[aria-label="Unsubscribe"]').click()
     console.log(`Unsubsribed ${ctr + 1}/${channels.length}`)
     ctr++
   }, UNSUBSCRIBE_DELAY_TIME)
  }
 })()