Older chipsets struggle with modern high-bitrate video decoding. Manually setting your video quality to 480p or 720p instead of 1080p will prevent buffering and overheating.

Several active developers maintain forks of open-source clients specifically patched to ensure older devices can parse current YouTube video streams without crashing. 3. Web App via a Modern Browser

The final stable branch of the official YouTube application to support Android 6.0 (API 23) is (released in late 2022). Versions starting with 17.35 and higher generally require Android 7.0 or above. Safe Sources for Legacy APKs

If the official legacy APK fails to load or throws server errors, third-party clients offer a far superior, smoother experience on vintage hardware. 1. YouTube Mobile Web (The Safest Route)

By downloading an older, stable version of the YouTube APK, you can bypass these restrictions. These versions are designed to work with the API level of Android 6.0.1 (API level 23). Where to Safely Download YouTube APK for Android 6.0.1

This creates a progressive web app (PWA) shortcut that functions similarly to the actual app without taxing system resources. 2. NewPipe (Legacy Version)

You may have a newer version that is corrupted, or the APK is incomplete. Re-download and try again.