Best Sites To Get Free And Copyright-free Images Per Category (e.g. Dog Breeds, Instruments, Etc)?

Hey folks! 👋

I’m looking for good websites where I can find free, copyright-free (or Creative Commons) images that are already organized or easy to browse by category — for example: • Dog breeds 🐶 • Musical instruments 🎸 • Football teams ⚽️ • Landmarks, foods, etc.

Basically, something I could use for an educational or guessing-style game project. I’ve checked Unsplash and Pexels, but they’re quite general — not very structured by category.

Any recommendations for sites or archives that have structured collections or datasets of free images? They should be easy to scrap or download.

Bonus points if they allow attribution-free use or have clear licensing info.

I have found something but usually they ask to pay a subscription.

Thanks in advance! 🙌