Leave out unused tags on galleries

I have multiple galleries on one website. The problem is when I add tags to one gallery, they show up on other galleries too even if the images in that particular gallery don’t have those tags applied. How do I hide these unused tags and only display tags used by that particular gallery?

I’m happy to buy a premium version but the Masonry (which is the only one I need to use) block doesn’t seem to have a premium version.