How to treat angel wing begonia brown spots?
If you're looking to treat brown spots, it's always a good idea to start by identifying the cause. It's likely that the plant is infected with fungus. I think the best thing you can do is remove the plant and provide it with conditions that are nice and airy with plenty of moisture. If you feel it needs a little extra help, I would suggest using a fungicide to help it improve.
It might be helpful to spray some anti-pest on the leaves or other parts of the plant that are affected by pests.
You can absolutely take good care of it! All you have to do is keep the humidity levels moderate to high and keep the temperatures between 65 and 75°F.