Viral infections and fungal spots.

now I struggle to get my words out quite a lot. I believe there is a virus that are in some cacti and when stressed from different things like over watering too much sun not enough nutrients the virus takes advantage of when the cacti is weak so it starts to show marks like these. some plants it starts dormant. also the seedlings that had gotten a fungal infection due to the virus that's the first time I've seen it so severe over 2 years since noticing this virus. I would love to converse with people to work things out so we can better the community in growing cacti. and be open to different possibilities instead of shutting things down.