The biggest thing to get used to with Incineroar I think is his weird recovery. He can jump after his Up B, so if you get launched off the stage and are above it you really wanna try to Up B first, and then look to jump and Side B or air dodge back to the ledge. His recovery is much more horizontal-friendly than vertical. Other than that I find Incineroar really scary to fight against because a few good moves can rack huge damage and kill off small mistakes.