By default, Android blocks installations from sources outside the Play Store.

Tap the button to save the APK file to your device. 3. Verify the File (Recommended)

: Go to Settings > Apps & notifications > Special app access > Install unknown apps . Select your browser (e.g., Chrome) and toggle Allow from this source to ON.

Did you get a specific (e.g., "App not installed")? How To Install APK Files On Any Android