The Star Wars prequel trilogy built a strong case against the Jedi's capability to confront Sith lords head-on, the most profound through-line being isolation from their rival and inexperience. Although the Jedi institution was filled with powerful and skilled Masters and Knights, their combat flare and grace were no match for the unmitigated passion and rage behind a Sith's own technique. This was why even an apprentice like Darth Maul could take on both Qui-Gon Jinn and Obi-Wan and even kill one of them.
Source：https://www.cbr.com/star-wars-prequel-jedis-no-match-sith/
