Alola! Just wanted to give tips revolving around the more exotic pokemon I have on my team!(please note I'm not an expert on pokemon, this is from experience and info Kukui told me!)
The best way to give enrichment to this variant of lycanroc is to have toys they can continuously chew on, hold treats or can be torn apart, if the toys are a lil expensive then i recommend hiking! Just don't let them eat the rocks, they'll try for sure.
Immediately after evolution I've learned it's necessary to let them hold onto you, it helps strengthen their hind legs and them watching you walk is good visual aid, however if you are unable to walk it's good to let them hold onto your wheelchair/ have their own aid that can be purchased online. apparently this can happen in the wild too according to professor Kukui.
They are LOUD, especially since they like to "scream"(more like a high pitched, prolonged bark) durring nighttime, this may vary from pup to pup but giving my lycanroc a miltank bone helps keep her quiet
They, are, slimy. They'll need quite a few bathes(2 every few days at most) as they're slimy bodies can hold onto a lot of dirt. Make sure you can access specialized shampoo meant to clean and not harm the chemical makeup of the slime as it keeps them healthy, also I would recommend wearing old, already dirty clothes as their slime can bleach fabric
They're quite social pokemon so it's best to have another pokemon to prevent depressive episodes, preferably a water type of similar size or build to the Goodra like a Blastoise or Lapras!
Make sure you are near a large body of water(such as a river, pond or even pool) as they enjoy wet environments!
If they start to dry up for no apparent reason, take them to a pokemon center immediately, it's a early sign of illness!
Volcanronas are surprisingly omnivorous, they tend to prey on smaller bug pokemon such as caterpie, but they also enjoy some nice veggies(mine absolutely loves cabbage!) but as for the required meat part of the diet, I recommend purchasing pokemon food that have high meat contents(please ensure your pokemon has no allergies and if they do, simply get food without the allergens or make it yourself)
They are quite introverted compared to Goodras so a large, warm space is good spot for your Volcanrona, if you have a large backyard with easy access to sunlight they'll be happier than a mudbray rolling in mud! Also if they are kept indoors for too long they can start showing signs of illness, do not lock them inside for no good reason!
I've learned they are prone to strong smells, if they are suddenly reacting negatively towards you it might be your perfume/cologne. The intense smells can cause them to experience overstimulation or other sensory problems, which can cause them to become angered if the irritant isn't away from them asap