The following website lists most predatory journals. I was wondering if you find the site reliable? https://scholarlyoa.com/2015/01/02/bealls-list-of-predatory-publishers-2015/
Just would like to make an update: while the original Beall's list web site (scholarly-oa.com) does not host the list anymore, there is another web site
https://predatoryjournals.com/
which claims to build on and expand the Beall's list (see https://predatoryjournals.com/about/ ).
See also the related question https://www.researchgate.net/post/A_new_site_listing_predatory_journals_What_do_you_think_of_it