Fun fact: Your ISP will just blatantly ban things if it benefits them. SKY is a British company that is a TV provider with a popular service called SKY TV. But they also are an ISP, so they ban many free movie sites that offer their TV shows for free. Is this legal lmao?
last thing, i googled both websites and 123Movies and FMovies are both so famous that they have Wikipedia articles about how they commit piracy and copyright infringement, which means legally ISP’s can block them on that basis, plus the FBI was involved in trying to take down sites similar to 123Movies according to Wikipedia. Links: https://en.wikipedia.org/wiki/123Movies and https://en.wikipedia.org/wiki/FMovies