Mit folgenden Vanilla JS Code Schnipsel scrollen die Anker Links smart zu den Zielen.

for (let element of document.querySelectorAll('a[href^="#"]')) {
        
    element.addEventListener('click', (event) => {
        
        event.preventDefault();
        
        let hash = element.getAttribute('href');
        let target = document.getElementById(hash.substr(1));
        
        if (target !== null) {
        
            let rect = target.getBoundingClientRect();
            let top = (window.pageYOffset || document.documentElement.scrollTop) + rect.top;
                
            let offset = 92;
            
            window.scrollTo({
                top: top - offset,
                behavior: "smooth"
            });

        }
        
    });
    
}