I'm using the following free pictures from unsplash.com for my website:

"ABOUT": Photo by Alekon pictures on Unsplash
https://unsplash.com/@alekonpictures?utm_medium=referral&utm_campaign=photographer-credit&utm_content=creditBadge

"NEWS": Photo by AbsolutVision on Unsplash
https://unsplash.com/@freegraphictoday?utm_medium=referral&utm_campaign=photographer-credit&utm_content=creditBadge

"Fotos": by Christian Wiediger on Unsplash
https://unsplash.com/@christianw?utm_medium=referral&utm_campaign=photographer-credit&utm_content=creditBadge

"Videos": Photo by Eric Deeran on Unsplash
https://unsplash.com/@edeeran?utm_medium=referral&utm_campaign=photographer-credit&utm_content=creditBadge

I'm using the following freejoomla extensions for my website:

GalleryAholic from https://graphicaholic.com/demos/extensions/galleryaholic

AllVideos, K2 and Simple Image Gallery from https://www.joomlaworks.net/extensions/free

Joomla Template Favourite and extensions FavSlider, FavImagehover and FavSocial from https://www.favthemes.com/