Vertical waves, causes and solution please?

Could you please also upload the .3mf file used for this print?

At first glance, it would be recommended to clean the nozzle and perform a few cold pulls to ensure there is no partial clog.

Next, it is also recommended to clean the carbon rods and re-tension the belts, then performing a full calibration to ensure everything is right. The vertical lines might be caused by the motion system needing maintenance.