Willow and Indiana Jones and the Last Crusade were good.
Willow was okay, The “Raiders of the lost ark” was good, (collaboration with Steven Spielberg) but I thought all subsequent Indiana Jones episodes were terrible.
Lucas didn't make those, he produced them.
Willow was directed by Ron Howard and written by Bob Dolman.
Indiana Jones and the Last Crusade was directed by Steven Spielberg and written by Jeffrey Boam.
When Lucas writes and directs, we get Jar Jar Binks.