If I remember rigjt I got segmentation fault while trying to install libc6 or something. But I remember having the same problem with netsurf that I was unable to download stuff. I think the solution could be found with easy debbie setup guide which had some info of giving rights to this or that to have access to filesystem.

It has been some years ago since I used ED. My way to solve things was to add all backport repos and try install --re-install with aptitude and by using -fix-missing and such. Normally it ended with broken ED and I started all over again. But my success moment was to use whatsapp web and telegram desktop with odroid Chromium 57 and to be able to post images to instagram with developer tools workaround. Not really that usable setup.