Looks like a string of sites have shut down over fears about being unmasked and legal action being taken against fmovies, who were running most of the sites.
https://kaido.to/home is being discussed as an alternative. I am unfamiliar and can't vouch for it at this time though.
https://4anime.gg/ still exists and works too.
There's also animelon.com which has a much more limited selection and is subs-only, but has the benefit of including episode transcriptions in Japanese, and Japanese subtitles with a pop-up dictionary.
Hypothetically you could even use tankie.tube or another PeerTube instance, but the selection there is even more limited.