BUGS EVERYWHERE!!!!

I LOVE THIS GAME??BUT it needs work....Sometimes it takes 5 minutes to wait for a world to load.And when I try to go to settings and change it to survival,it LITERALLY glitches and brings me to my home page.AND WORST OF ALL,When Im playing a world it starts becoming really slow and glitchy.And when I try to move to the side it deletes blocks instead of moving...AND THAN IT BRINGS ME TO MY HOMEPAGE!!!Mojang,you need some work...

Panda_Lover16 about Minecraft: Pocket Edition, v1.1.4