Often, sites bait "extra quality" tags but deliver corrupted RAR files or videos encoded in weird codecs that your TV won't play.
While individual downloading rarely leads to jail time, your ISP sees everything. In Germany, the US, and the UK, copyright trolls specifically monitor searches for terms like "MKVCinemas 4K" because they know you are a high-value leecher—someone who cares about quality and thus likely has a fast, unmetered connection worth suing. searching for mkvcinemas in extra quality