function extractUsernames() {
    const usernames = [];
    const elements = document.querySelectorAll('._ap3a, ._aaco, ._aacw, ._aacx, ._aad7, ._aade');
    elements.forEach(element => {
        const username = element.textContent.trim(); 
        usernames.push(username);
    });
    return usernames;
}
const followersUsernames = extractUsernames();
console.log(followersUsernames);                        
                    
                
Code-snippet to paste in console