I've found myself using the browser version of apps (as terrible as they are) in replace of deleted apps. I'm very used to the Chrome -> search bar -> "y" -> "youtube.com" series of taps now.
If you want to break the habit of going somewhere through the address bar, edit your /etc/hosts file so that address points back to localhost.
0.0.0.0 reddit.com
0.0.0.0 old.reddit.com
Still, I can use the search bar of youtube, and I can access single Reddit post (from a google search for example).