Since the game is considered "abandonware," the most reliable place to find original files is through digital preservation sites rather than traditional "crack" sites: Internet Archive : A community-maintained LEGO Ninjago IPA Collection Internet Archive contains various versions of the game, including version 1.0.69951 Reddit Communities
Seeking a cracked IPA for LEGO Ninjago Tournament is a common request due to the game's removal from the Official App Store legor ninjago tournament ipa cracked for ios fr link