I seem to brake minecraft it keeps crashing the mutible mod worked before?

I seem to brake minecraft it keeps crashing the mutible mod worked before? - 1

Maybe it's because your device is slow?

I don't know, but why don't I move your question over to the Games & Recreation > Video & Online Games category where you may have a better chance of getting an answer. (That's one of the things the Edit button beneath your question is for.)
.
Also, just FYI, 'break' and 'brake' are two different words.
.
.
(Brake =/= break.)