I've been a moderator for a few years, but now I'm not really active neither as a member of CrossValidated, nor as a moderator, so I'm not the best candidate for the role anymore. That's the first reason.
The second reason is that I don't like where StackExchange is heading. Moderators resignedin the past because of, lightly speaking, strange StackExchange's politics, but I decided to stay, because I saw the value in the site and the community, regardless of it. But then, there was the controversial policy about AI generated content, and now the OpenAI partnership.
I see that as a response to using their content for training the "AI" chatbots, users are vandalizing their questions and answers (you cannot delete them it they were upvoted), in the response moderators are reverting the changes--this is what they should do as moderators, but I'm not comfortable with that. It's too much for me. Site like this is created by the community and should be governed by the community, but as a community we have only a limited impact on where it is heading.