Download the bundle APK only if you know how to use SAI (Split APKs Installer) . Otherwise, pick a single APK file.
Since your prompt included the Portuguese phrase , if you intend to publish this for a Portuguese-speaking audience, here are a few tips for translation: youtube apk versão antiga
Instead of hunting for an old YouTube APK, consider: Download the bundle APK only if you know
YouTube version numbers look like: 17.32.36 (higher = newer). youtube apk versão antiga