Because my e-reader only runs koreader

Yes but there are lots of plugins and tweaks from being able to get Anki on there to chess clients. It is 100% possible just I am not clever enough to make it.

oh sorry, my first language is spanish, not english. I want to play lichess on it

Koreader is an e-reader software

I use it and I have no problems at all. Would say it’s on the same level, but the ai searches are actual relevant and tasteful unlike google

I’d argue ddg is good and they area product of capatalism. Nobody is forcing you to use google