In VGC, pretty much every Pokemon has protect, apart from incineroar.
Max speed and Attack Incineroar wont let you survive much hits.
You dont have much speed control so maybe add tailwind to salamance, and a trick room setter as your last mon.
Your salamance will pretty much die, since not enough speed or bulk. The world champion had a good specially defenisve salamance spread I can show you,
Stone edge is not very helpful on Groudon.
Focus blast is not ver helpful on Lunala.
You have 0 Xern counters, so maybe add roar to groudon/salamance/Incineroar, and gyro ball trick room stakataka can also help against Xern.
Also Incineroar should be running a defensive set, as the items you are giving it are defensive items. Also 252 spe and 252 atk dont help at all.
A standard Incin spread is
Incineroar @ Figy Berry/ AV
236 HP/ 36 Def/ 236 Sp Def
-Snarl/Darkest lariat/Knock Off/Roar
Also what do Groudons and Salamances evs do?