Hi! First off, if you’re using sticky webs, you’ll want Pokémon that can take advantage of them. Basically, Pokémon that benefit from a speed boost. I’d say that Water Urshifu would be fantastic, it will outspeed Cinderace with webs and can OHKO with Surging strikes(with choice band/life orb.) I’d say life orb as you have two choice items already.
Next, you want to hit Flying Type Pokémon and Levitators that are immune to webs like Rotom and Togekiss. I’d say that Mold Breaker Excadrill is good, it would also benefit from webs as its kind of mid-speed and can also learn Rock slide to hit flying types other than Togekiss.
I’d say that you don’t need another wall if you have shackle, especially in 3v3, so a dedicated Dynamax Pokemon is probably better. Excadrill is a good max candidate, but if you want another, Cinderace is a no-brainer, as it’s the best Pokémon in BSS right now.
Finally, looking at the elements you already have, I’d drop the sp. attack EVs on shuckle (it won’t be doing much damage anyway) and give it toxic over encore to increase chip while they’re trapped in with infestation. For Dragapult, modest should be fine since you have sticky webs. Also, Draco Meteor is usually stronger. For Togekiss, you might not need scarf because of webs, but it’s up to you.
This is a PokePaste of my suggested Team. Hope I helped!