Blender lacks the grouping function to add keyframes and show and hide the group uniformly

Currently I use Collection, which can show or hide all objects under the Collection at once, but I can't add keyframes to the Collection. I can only add keyframes to each object under the Collection, which is very troublesome. When I don't use Collection and use empty objects for parent association, I can add keyframes to them all at once, but I can't add show and hide keyframes to all child objects at once. Group objects are very common in CG software, but there are none in blender. Collection is very similar to group, but I can't add keyframes to Collection. I don't understand why it is designed like this.