Flickr is a great platform to begin with and you can use the Flickr storage as a backend for your own website. It's not as fast as using an image CDN, but the speed difference is not that noticeable.
Take a look at Nanogallery: https://nanogallery2.nanostudio.org/. With some very basic PHP/HTML skills and understanding of JavaScript you can go a long way.
Flickr is a great platform to begin with and you can use the Flickr storage as a backend for your own website. It's not as fast as using an image CDN, but the speed difference is not that noticeable.
Take a look at Nanogallery: https://nanogallery2.nanostudio.org/. With some very basic PHP/HTML skills and understanding of JavaScript you can go a long way.