Unless someone gives you their login details, I don’t think you can get free Netflix. It’s a subscription service!
What you can do is this:
Everything I mention here is free!
Android phone/TV: Install Blokada to deal with ads. Install any or all of the following: BeeTV, CinemaHD, Flixoid, TeaTV, VivaTV, NovaTV. Install Stremio from (Play Store) and make sure you have at least the addon Torrentio installed.
PC or Mac: Install Stremio (stremio.com) and make sure you have at least the addon Torrentio installed.
All these will effectively give you everything Netflix has to offer, and Disney, and Prime, and every other subscription service, and more besides.