In attempt to launch the game, after the mojang studios screen a white screen appers and the game crashes within a few seconds. Many people have mentioned this issue with their game on ipads specifically in r/minecraft subreddit. The bug started seemingly after 26.51 version update.
MCPE-243226
Game immediately crashes on ipads
Resolved
Duplicate
0
Duplicate of MCPE-242503, Please update to 26.52 Hotfix update, This resolves the crash problems in your IOS Device