I work at our local Library Kanopy is Free Streaming all you need is Libaray card that should be free as well if it isnt that would be odd since Library while it doesnt have all main stream releases like the 4 Major Ones Disney Plus/Hulu, Paramount+ , Prime Video and Max it has a decent selection.
No commercials.
It's a good service. They have a nice selection of snobby criterion stuff, docs & some trash.
Depending on what plan your library subscribes to, you'll likely be limited to 5-7 movies per month, though.
It's not universally available. Your local library will have to subscribe to it. I believe some big regions, like New York, dropped it because of tight budgeting.
Even if your library system doesn't have an agreement with Kanopy, they may have another service like Hoopla. The library here has both Kanopy & Hoopla.
I actually prefer Hoopla. It has a better selection overall, at least for my tastes.