Did i build my bike wrong

My bike setup is a suntour epixon

Wheels sunringle sl 27.5

Tires racekings 27.5 2.2

Drivetrain full shimano cues 4010 crank 40-24t and cogs 11-42t 10s

Guys today overtake me very easy witha 29 semi slick tires, should i consider to change my wheel setup for better speed?