snowbank town gym strategys

so im at the 7th gym and got beat on the second trial so i do i need to switch out certain team members? ( my team has vaporeon, smore im trainning it to evo into seikamaster, garygph,garlikid,terlard and nuclear arbok ) and if i do need to change one of them what type would best stand a chance? p.s. im at snowbank town gym .o.

also theo isint talking to me. is that a glith?

What's your starter?
Steel and Flying attacks are often useful as well as Dragon attacks.
I took Metalynx, Tubareel, Garlikid, Eshouten, Smore and Gararewl.

i have metalynx but its weak :l i need to lvl it up

try mith alot of nuclears tghey may be pretty powerfull (when their attacks work)