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 Kobo or PineNote
Is there anything that still has side buttons and no touch screen? I’m still holding on to my old kindle 3rd gen (kindle keyboard) because I abhor touchscreens on my books.
Ideally also with no backlight, or the ability to turn the backlight off.
I’ve been very happy with my Vivlio Touch Lux 5 which is Linux based - https://www.vivlio.com/en/
Boox run android, so that might fit your title.
From your post content though it actually sounds like you’d be happy with a Kobo. You can easily transfer books and you can install third party open source reading software too.