If you haven't already, check to see if your local public library has Hoopla for library card holders. This isn't the same as having Netflix or Amazon, but it's a good resource! It beats YouTube free movies that include interruptive ads. New things are added and other things go bye-bye each month. Linked into Hoopla is Curiosity Stream, which is the DOCUMENTARY FILM resource.
It is currently the largest platform for these offerings.
Recently we watched the documentary about OTZI the ICEMAN!