Definitely. In cloud storage services like Google Photos, you can manage sharing permissions. You can set an album to be private so that no one else can view it, which in a way is hiding it from everyone. Or you can share it with a specific group and exclude certain people by not adding them to the sharing list. This way, you have control over who sees your photo albums.
Yes. On your smartphone, for example, if you're using an iPhone, you can go to the Photos app, select the album, click on the share icon, and then choose 'Hide from' to select the people you don't want to access it. But this is more of a local device privacy feature.
Most platforms that deal with photo albums have privacy settings for this purpose. Take Dropbox for instance. If you have photo albums stored there, you can go to the sharing settings for that particular folder (album) and adjust the access permissions. You can make it so that only you can view it, or you can share it privately with a few people while excluding others. It's all about protecting your personal photos from unwanted viewers.