There are many portals - online cinemas on the Internet. Many of them are streaming free movies. But I 'm annoyed by obsessive ads on them, so I prefer to download movies in good quality using a torrent program. It's a free and very fast way to download large files. If you also want to download movies via torrent, then read this long post
https://www.firesticktricks.com/torrent-sites.html with a list of sites where there are free torrent files in good quality. This will really save you a lot of time.