if you want to gauge the efficacy of a search engine, employ what i call the "chudjak strategy." think of a chudjak you've seen before and try to image search it with a brief description

pic related is "chudjak getting punched."
>google completely fails to deliver with a handful of unrelated chudjaks
>yandex provides an incredibly broad and wide array of chudjaks, however fails to find this one in particular
>duckduckgo fails completely and provides no chudjaks whatsoever
>bing ends up finding me the chudjak getting punched, however its total chudjak volume pales in comparison to yandex

all in all, yandex clearly has the least "ethical guardrails" and filters, but fails on a level of specificity. you will likely receive different results depending on the "basedness" of your chudjak in particular.

for instance "chudjak lynching troon" will not be found on bing or google at all, however yandex will retrieve it immediately. the reason for this is that there are multiple iterations of "troon getting ACKed by chud" so yandex has no issue fulfilling this search. "chudjak getting punched" however is too specific for yandex to find

all in all, this suggests yandex has the overall best schema, and simply requires further refinement