

I personally use searx, a metasearch engine which lets you chose among many sources and returns results from all the selected ones. If you go into the settings, pic the “engine” tab, you have tabs for each specific search mode, and under “image”, Pinterest is along the options, alongside many others.
If you intend to make it your everyday search engine as I have, there’s one tiny caveat you should know: Like the Fediverse, it’s a service without a central server, where everyone can host an instance, the list of public instances is here. But since all of them are managed by individuals or small groups, they can fail or be overloaded, so you may have to switch to another one once in a while. Hosting your own instance is also an option, but I have yet to get around to learning that. Right now, the instance I use is search.be .
Oh right, that’s a shame, I should’ve tested it first.