I am more versed in stall tho, so here’s some tips.
(This is assuming you have the big stall 6 aka the sample team[Gliscor, Blissey, Dondozo, Clodsire, Toxapex, Corviknight])
You try and Toxic it with Gliscor, use Tera Fairy if you have to to absorb Dragonium Z, hazards are also a good option to wear it down further, if you already have Toxic Spikes up from Toxapex that’s even better.
From there you switch into Dondozo and wall it out, however if unlucky it might just break through. Like the goat above me said, it’s VERY difficult to handle Gouging Fire defensively, hence why it’s recieving a suspect test, and from the sounds of it, it’s probably getting banned(don’t quote me on that tho). You can also waste PP by constantly switching into Toxapex, then switching into Corviknight baiting the earthquake, then switching into Toxapex baiting the fire move, etc., however do this only on a last resort as the Player can easily predict one of these switches if you do it repeatedly.