This is true, and again this is handled at the state level, but I know my state’s database does include postings for remote work, though I’m not sure if it includes all of them.
In any case, I’d actually encourage reaching out via phone or email to your nearest job service office, if you’re seeking employment. These places are federally funded by our taxes, so they should be able to answer questions and help guide you to whatever your best options are, even if that includes helping you find remote work with out-of-state employers.