It crashes and it lags and cuse me to crash and it started when the behavior pack and reocuse pack thing was add and pls fix right away

Pls fix the lag and crashes and fix the crash when I use the recorce pack and behavior pack fix right a way pls!!!!!!! Ps if possible add a way to connect Minecraft to wii u to play with friends on wrold pls cuse I have a friend that plays Minecraft on with you and I play on iPad pls add this