I wanna buy an ebook reader but i don’t want any amazon or other companies shit in there, just something i can connect to my pc, pass ebooks in different formats into it and read.
+1 on this. Kobos actually use Linux under the hood. And although the default UI is proprietary, it’s super easy to install KOReader.
You don’t even need to hack into it some custom firmware, just a sideloader, which normally doesn’t break even if you actually updated the base firmware.
Here the official tutorial on how to do it: https://github.com/koreader/koreader/wiki/Installation-on-Kobo-devices
AFAIK every single ebook reader on the market actually runs Linux under the hood!