Short answer, no. There isn’t any FOSS image search with own index or at least only use the images from certain webs, like Pinterest, Pixabay and similar, there are only valid extensions which are FOSS using the index from Google, Bing, Yandex and others, like eg. the one I use https://github.com/dessant/search-by-image (Extension from Germany)
























These are the biggest in the world, the newest versionis Bagger 293, 96 m high and 225 m long, 14.500 tons, but now after almost 30 years need some little fixes https://www.youtube.com/watch?v=nv-7nLV-YUM