I added individual years 2017-2021 from the living atlas Sentinel-2 10m Land Use/Land Cover Time Series directly from the content pane. If you double-click on the layer it opens up all 5 years and you can then add 2017, 2018, 2019, 2020, and 2021 individually to a map.
Once there I cannot change the layer's symbology from the black and white 1-11 color scale to indicate the 11 distinct land-use classes. I have tried applying symbology from layer (I found a layer with the category names) which changes the category names but then no colors appear on the map.