I’ve been saying for years if we just said queer and trans we could pretty much capture the whole thing. In a lot of ways I think straight cis folks and corporate culture are some of the main drivers of the alphabet soup acronym because they can’t imagine saying queer.
I am far from an expert but it looks like overwatering to me. Over time I’ve realized more and more that it’s way better to underwater my succulents and cacti. Let it get really thirsty. Hold off watering 3 weeks or so and check it out again. It probably needs watering even less than that. It’s hard to just let it be but that’s my two cents.