I used to use thepiratebay.org, but recently it seems the quality of the site has degraded.
I sometimes also use 1337xx.to , but that site seems to have a very small selection.
Note that I couldn’t find an answer to this question in the wiki + meathread, so if the answer is already there, please direct my attention to it 🙏🏴☠️
Apart from private trackers, rutracker seems to be the best for lossless movies in 1080p. Big selection of blueray remuxes/rips which are often missing from the other public indexers, likely because causal users prefer 2gb files to >20gb.