To crop image based on ratio, on Elementor’s Image Widget add this CSS:

16:9 Landscape CSS

selector {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    overflow: hidden;
}

selector img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 100%;
    min-height: 56.25%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
    object-position: center;
}

9:16 Portrait CSS

selector {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 177.77%; /* (9 / 16) * 100% */
    overflow: hidden;
}

selector img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 56.25%; /* (16 / 9) * 100% */
    min-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
    object-position: center;
}