Though even this wasn't that hard... I easily found more volunteer testers than I needed on a relevant subreddit (the app is a PvP stat tracking app for a videogame, and I found plenty of people willing to sign up to test my app on a subreddit dedicated to that videogame).
That said, because of the unique testers requirement it was a much bigger pain in the ass to get listed on the Play Store than the Apple App Store (my app is written with kotlin multiplatform and supports Android/iOS/Windows/WASM).