I use Appsales to catch sales on paid games: https://play.google.com/store/search?q=appsales&c=apps

Seconding this recommendation. You can find it on the Play store here: https://play.google.com/store/search?q=mini review&c=apps&hl=en_US. And, you can find the website here: https://minireview.io/

If the list on PCGamingWiki is up to date, there aren’t many Epic exclusives anymore (only 26 currently): https://www.pcgamingwiki.com/wiki/List_of_games_exclusive_to_Epic_Games_Store

And, earlier this year, Tim Sweeney said that many of exclusivity deals weren’t a good investment while the free games have been “magical.”

So, it seems like a problem that is solving itself over time. Epic will probably still have exclusives going forward, but I would expect them to target a few high-value exclusives like they got with Alan Wake 2. Or, maybe they will just do more acquisitions of games to self-publish, like they did with Rocket League and Fall Guys.