unfollow.js

const waitForElemToExist = async (selector) => {

    const elem = document.querySelector(selector)
    if (elem) return elem

    return new Promise(resolve => {
        const observer = new MutationObserver(() => {
            const elem = document.querySelector(selector)
            if (elem) {
                resolve(elem)
                observer.disconnect()
            }
        })

        observer.observe(document.body, {
            subtree: true,
            childList: true,
        })
    })
}

const unfollow = async () => {
    //document.getElementById("toggleAdvanced").click()
    let unfollowCount = 0
    let next_unfollow, menu


    const accounts = '[data-testid="UserCell"]'
    while (document.querySelectorAll('[data-testid="UserCell"] [data-testid$="-unfollow"]').length > 0) {
        next_unfollow = document.querySelectorAll(accounts)[0]
        next_unfollow.scrollIntoView({
            'behavior': 'smooth'
        })

        next_unfollow.querySelector('[data-testid$="-unfollow"]').click()
        menu = await waitForElemToExist('[data-testid="confirmationSheetConfirm"]')
        menu.click()
        next_unfollow.remove()
        unfollowCount++
        if (unfollowCount % 10 == 0) console.log(`${new Date().toUTCString()} Unfollowed ${unfollowCount} accounts`)
        await new Promise((resolve) => setTimeout(resolve, (Math.floor(Math.random() * 200))))
    }
}

unfollow()