My 10 years old web site is about niche content(cinema) news gallery. (its a news site; but %90 of pageviews are from galleries)and i'm getting photographs from news agencies and public relation offices.i have imagesitemap on my webmastertools page; and has no error.  but, %2-3% of images are indexed by google. think that, i making news about OSCAR Awards Ceremony. i write 3 paragraph article about it; and add gallery, which i get photos from agency.my photos cant be unique or first.. of course someone used before me.. but its uniqe or first with turkish content. why am i not in search result in google.com.tr?and what do you suggest the gallery-intensive web sites as like mine? (adding watermark, or some text detail is not working)
SEO for Gallery-Intensive Web Site
seo;google;google search console;google search;local seo