you can run this from the js console on twitter while looking at your likes page to clear them all out. nice and easy

unlike all your tweets.js

function unlikeAndScroll() {
    Array.from(document.querySelectorAll("div[aria-label$='Liked']")).forEach(button => button.click());
    console.log('Unliked all visible tweets. Scrolling down...');
    
    // Scroll to the bottom of the page
    window.scrollTo(0, document.body.scrollHeight);

    // Wait for more tweets to load and then run again
    setTimeout(unlikeAndScroll, 3000); // Adjust the time as needed
}

unlikeAndScroll();