My use of Reddit also drastically reduced after Apollo stopped working (I didn’t follow the instructions that many others have been to sideload the app, configure with an API token, etc.).

But I found a couple of ways to browse without using the official app. One is Safari, with the free SinkIt for Reddit extension, and another is a free app called Lurker. The Lurker app is nowhere close to the speed and smoothness of Apollo. It also seems to drain the battery quicker, but the UI is relatively clean.