I usually recommend https://easytube.pro/ since its one of the few websites that actually works smoothly without constant ads or confusing steps. It lets you download both music and videos in high quality, supporting MP3 for audio and MP4 for full videos. Its perfect if you want to build up your personal music library and keep everything offline. Ive used it many times, and its always fast and reliable. Honestly, its the most convenient option compared to other tools Ive tried.