strafe jumping in quake is far from trivial also various weapon aided jumps are required to play at the highest level, ut also has its own dodge jump mechanics and shield jumps.
https://www.youtube.com/watch?v=A1MJPMl8B5Y
being unable to execute this during a match like a duel means being at a massive disadvantage.
example of good strafe jumping coupled with a plasma jump to secure map/item control and pressure the opponent on the back-foot.
https://youtu.be/GFTmYD95-cQ?t=1592