You can access those simpler chronological feeds in Facebook under More > Feeds. They still insert sponsored posts in that feed, but you can block them with browser extensions.

The annoying part is that if you load the feed url from a bookmark, at least on mobile, it reloads to the home page anyway. So you need to navigate to it manually each time. Never used to be this way. I guess they’ll remove the “feeds” feature soon enough anyway.