Externally hosted gallery

I have over 11,000 images in separate galleries that I want to embed on my site. Obviously uploading them to WordPress would take a day and an age and doubt it’d help with my site speed/hosts would be happy.

I currently have them uploaded to Google Photos, and hyperlink them to a public gallery, but would like to embed them within the website (which I don’t think you can do with GP)

Question: Does anyone know a good upload/hosting service that I can upload the photos too and a plugin, which I can embed the galleries into the site?

Thanks in advance

The page I need help with: [log in to see the link]