Use Minecraft: Pocket Edition alternatives (legal)
For the best experience—complete with online multiplayer, skins, and security updates—it is highly recommended to download Minecraft officially from the Apple App Store. minecraft 117 ipa download link
This is the safest route. While you cannot easily downgrade to 1.17 specifically, purchasing the app ensures you get the latest, most secure version with full multiplayer support. Use Minecraft: Pocket Edition alternatives (legal) For the