I need help with a moveset for my doubles Toxapex

I'm trying to get a good team together for doubles to grind BP in Pokémon Unbound. Here's my team!

Trevenant-

Impish Harvest Sitrus Berry

252 HP 252 DEF 4 SpD

Curse Ingrain Will-O-Wisp Horn Leech

Toxapex-

Relaxed Regenerator Black Sludge

252 HP 252 SpD 4 DEF

Recover Toxic Spikes Baneful Bunker Liquidation (for DEF lowering effect mainly)

Gengar

Modest Levitate Focus Sash

252 SpA 252 Speed 4 HP

Hex Thunderbolt Sludge Bomb Reflect Type

Vikivolt

Modest Levitate Quick Claw

252 SpA 252 Speed 4 HP

Bug Buzz Air Slash Thunder Sticky Web

I'm just now learning more about competitive Pokémon so I understand this might not be the best team, but its fun and pretty effective. I'm asking for help because Toxapex just feels held back for some reason and I can't get my streak higher than 25ish. For context- basically setup is to have trevenant burn any physical and have toxapex set up Toxic Spikes. Trevenant can keep itself alive easily an usually KO an opponent or two, if I find myself in a unfavorable match-up I'll try to bait it to switch with Curse, plus curse+will-o-wisp on something take it out pretty quick if they don't. Use toxapex and trevenant to stall out the first set thrown out basically. You probably get the idea with Gengar, and sometimes mega gengar, hex does double and I can pretty much guarantee a status problem on both Pokémon out by the time he gets sent so he revenge kills basically everything that doesn't have a resistance. Vikivolt I just like, and though he's slow, when he does get a shot off especially Thunder or Bug Buzz, whatever he hits usually dies.

Any help or advice would be really appreciated!!