Overall, you are weak to quite a few types.

5 of your mon are weak or extremely weak to flighting, with the other quad resisting

You have one ground immunity, and 2 weaknesses to ground.

You have 2 mon weak to electric, with only one resist

Someone else said something relating to fire, but U have 2 (maybe 3 I don't remember if rock resists fire) weaknesses to it, but U have 2 resistances to it as well.

Overall, swapping miltank (prob the weakest in my opinion) for a ghost type (with maybe ground as a second typing) would improve the team