What can I Upgrade?

Hi everyone, I’d like to upgrade a few things on my Cube. Do you have any ideas? For now, it can be low-cost — it doesn’t have to be a carbon wheelset right away. What would improve my overall experience with the bike? I’ve already ordered road tires

Specs:

FORK
CUBE Cross Race Disc C:68X® Technology, Integrated Cable Routing, Flat Mount Disc

DRIVETRAIN & BRAKES
SHIFT/BRAKE LEVERS
Shimano 105 Di2 ST-R7170

BRAKE SYSTEM
Shimano 105 BR-R7170, Hydraulic Disc Brake, Flat Mount (160/160)

REAR DERAILLEUR
Shimano 105 Di2 RD-R7150-DGS, 12-Speed, Electronic Shifting System

FRONT DERAILLEUR
Shimano 105 Di2 FD-R7150F

BOTTOM BRACKET
Shimano SM-BB71-41B, 86mm Pressfit

CRANKSET
Rotor Vegast BC2, 46x36T

CASSETTE
Shimano CS-R7101, 11-34T

CHAIN
Shimano CN-M6100

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COCKPIT
HEADSET
ACROS, Top Integrated 1 1/2” with Integrated Cable Routing, Bottom Integrated 1 1/4”

STEM
CUBE Aero Stem with Cable Routing

HANDLEBAR
CUBE Compact Race Bar

BAR TAPE
ACID Bartape RC 2.5

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WHEELS
WHEELSET
CUBE OR 2.5, 28/28 Spokes, 12x100mm / 12x142mm

TIRES
Schwalbe X-One Allround, Performance Line, Kevlar, 33-622

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COMPONENTS
SADDLE
ACID Nuance Pro

SEATPOST
Newmen Evolution, 27.2mm