I created a player using HTML/JS/CSS, which I uploaded https://codepen.io/aaron1799/pen/MWVeRYY , specific use on the real server http://auto-rychnov.cz/, the player works correctly on high resolution (PC), but not working properly on mobile, for example, the preview does not work when hovering over the timeline with finger. I would like advice on how to fix it. Thank you in advance¨

js - timeline part

// Timeline

timelineContainer.addEventListener("mousemove", handleTimeLineUpdate)
timelineContainer.addEventListener("mousedown", toggleScrubbing);

document.addEventListener("mouseup", e => {
    if(isScrubbing) toggleScrubbing(e)
})

document.addEventListener("mousemove", e => {
    if(isScrubbing) handleTimeLineUpdate(e)
})


let isScrubbing = false;
let wasPaused;

function toggleScrubbing(e){
    const rect = timelineContainer.getBoundingClientRect();
    const percent = Math.min(Math.max(0, e.x - rect.x), rect.width)/rect.width;

    isScrubbing = (e.buttons & 1) === 1;
    videoContainer.classList.toggle("scrubbing", isScrubbing)
    if(isScrubbing){
        wasPaused = video.paused;
        video.pause();
    } else {
        video.currentTime = percent * video.duration;
        if(!wasPaused) video.play();
    }
    handleTimeLineUpdate(e);
}


function handleTimeLineUpdate(e){
    const rect = timelineContainer.getBoundingClientRect();
    // e.x = position mous, rect.x = position timeline
    const percent = Math.min(Math.max(0, e.x - rect.x), rect.width)/rect.width;

    // /10 protože mám po 10 vterinach 
    const previewImgNumber = Math.max(1, Math.floor((percent*video.duration)/10));
    const previewImgSrc = `video/preview${previewImgNumber}.jpg`;
    // Uložení cesty k obrazku
    previewImg.src = previewImgSrc;
    timelineContainer.style.setProperty("--preview-position",percent);

    if(isScrubbing)
    {
        e.preventDefault();
        thumbnailImg.src = previewImgSrc;
        timelineContainer.style.setProperty("--progress-position", percent);
    }
}

This work on PC browser but not well on mobile