Ask HN: Self-taught webdev with lots of free time. What should I learn?

Hey HN,

I'm a self-taught webdev with 10 years xp. I have lots of free time right now with a bit less freelance projects coming in, and I'm getting a bit bored of building web CRUDs and feel like I'm not learning much anymore.

I'm thinking it'd be better to specialize more, but I'm unsure which direction to go. I'm actually selling myself as a full-stack web developer, knowing JS/react/vueJS, PHP/Laravel, bit of design, server management etc.

If possible I'd like a job that can be fully remote or at most 1 day on site, which probably excludes security and high level stuff.

I have lots of time to learn so I'm open to any advice even if it's just to git gud and read SICP.

tl;dr webdev having done every type of CRUD under the sun - what do now

Thanks for your input !