The Jaws sequels didn’t seem to want to be an improvement or a continuation; they just wanted to throw more cheap thrills at the audience.
A Jaws remake would likely do the same thing, but this time rather than pretending to have a new story, they would likely just recreate the old one, but with CGI-sharks and more jump scares.
By Jaws: The Revenge, they officially jumped, well, the shark.
So with too much to live up to, they grabbed at low-hanging fruit and created thrills, but without the quality, character or storytelling that made Jaws great.