>>33490663Don't use Toxapex. It's boring to use in-game. Trust me.
If you want to use a Poison type, use A. Muk.
When you build your team, you should have at least one Fighting type to take on Normal types, and one Ground type to take on Electric types. The rest are personal preference as everything else has more than 1 weakness (Although I personally include Dark in this rule as well since Ghost vs Ghost is unfavorable).
Try something using these 3 to get started. Passimian is also acceptable for a Fighting type if you want something faster or don't like Bewear's Fighting and technical Fire weakness. Try to round this out with some Special Attackers.