Lagging every time I play the game

So I've been playing minecraft pe since 2010 and I lvlove e this game so much! I love the youtubers and every update! Until this new update ( version 1.1 ) the update was nice having colourful beds and lamas and those blocks that I don't like , When this update started It made my Game CRASH SO HARD UNTIL I decided to relax for a while and open the game again.THEN IT CHRASHED MANY MANY MANY TIMES until my saddest moment arrived deleting the game and re downloading made me cry and say goodbye 😭😪😪😰😥😢 then when I downloaded again I was expecting better news but Unfortunately no . It was the same but worse , even typing a world name CRASHED ME AND THATS WHEN I GET SO ANGRY but it calmed down and back to normal then suddenly 3 days later, CRASH AGAIN CRASH CRASH CHRASHED!!!!! Then I. Decided to come here to tell you people FIX THIS STUPID PROBLEM ITS MAKING ME IRRITATED AND PUTTING MINECRAFT ON MY HATED LIST! SO FIX THIS PROBLEM OR I WILL NO LONGER PLAY MINECRAFT AS BY FAVORITE CHILDHOOD GAME! I AM VERY ANGRY MY WHOLE FACE IS RED!! 😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😠😠😠😡😠😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡😡