Can I change the loading animation on search?

Yes. In your site's CMS open Theme, then Advanced, then Loader. That is the little animation that plays while an AI search is working. Pick Microphone (a podcast microphone that suits any show), True Crime (a fingerprint under a scan beam), Retro (an old TV tuning through static), Explorer (a compass finding its bearing), Film (a clapperboard snapping a take), or Artist (loose shapes and a brushstroke). Whichever you choose is drawn in your accent color automatically, so it always matches your theme. Each one brings its own line of text as well, so a film website reads Scanning the footage rather than Searching the episodes.

Your website starts with one already chosen for you. Three themes bring their own: Dark Cinematic the fingerprint, Retro Neon the old TV, and Voyage the compass. Otherwise it follows what your website is, so a film website starts with the clapperboard and an artist's with the Artist loader. Picking one of those themes later changes the loader with it, and you will see the new one marked in the Loader panel. Once you pick a loader yourself it is yours, and changing your theme after that leaves it alone.