You get a 1080p label, but the actual visual fidelity resembles a muddy 720p file. The "high quality" you searched for is often a placebo effect based on resolution tags, not actual data throughput.
If you are looking for high-quality, free streaming that is also legal, consider these platforms: 123freemovie high quality
Most of these sites operate on a "scraper" model. They pull video files from third-party hosts (like Openload, Streamtape, or Doodstream). To save bandwidth costs, these hosts often re-compress files heavily. A legitimate 4K movie might be 15GB; on a free streaming site, that same movie is often crunched down to 900MB. You get a 1080p label, but the actual