I have SO many BoTW fics I’m proud of, but I feel like I can’t handle much in the way of actual criticism right now (My mental health is crap and these stories are for coping.) can I ask that there be no negative feedback unless there’s some horrible mishap or something is genuinely offensive to a marginalized group?
You're absolutely allowed to ask this. Most people just share their stories to share them. There's no requirement that people give criticism, or even feedback of any kind at all. Of course, if you'd like positive feedback, that's certainly ok to ask for too.
(the only thing that's not really ok to ask for is criticism, when you're not ready for it. Like if you ask for critiques but then get mad when people actually give them. But you're not doing that, so its all good!)
Ask away! :)