There is no truly bad SW movie. Solo is really mediocre, though.
As a fan of Brain Daley and Ann Crispin, I loved it and thought they did a fantastic job. It rewrote the legends origins, but kept some of the highlights. I’m a huge lover of Han’s corner of the Star Wars universe and so having a movie devoted to him is about the most exciting thing for me since learning Lucas was making the Prequels. It was the movie (since Disney acquired Lucasfilm) that I was most anticipating and it did not disappoint me.