Looks good to me. All the lines are evenly spaced and the pattern in the middle aligns just fine.
What is more significant: the circle-and-square pattern in the upper left corner looks perfect, with no irregularities. I expect deploying a caliper on those will show they’re equally sized in all directions.
Which confirms, AFAICT, the irregularities in cuts come from beam problems, not mechanical problems. If the tube is not operating the proper resonance mode, known as TEM00, then it will not focus properly and cannot cut properly.
The quick-n-easy test for that is putting a scorch on paper to see whether it’s a disk (good) or some bizarre shape (bad).
The Ruida controller will let you set a laser pulse duration in milliseconds. How you do that depends on the controller, but the Menu on mine and the Z/U button on others leads to Laser Set, where you pick whichever mode results in a pulse when you poke the Pulse or Laser button.
Then set the power level for that pulse low enough to produce a scorch on a piece of paper / tape / cardboard between the tube exit and Mirror 1. You want a nicely browned spot, not a hole torched through the paper.
The discussion following this post explains what you’re looking for:
Show us a good picture of the scorch so we can either rule out a(nother) problem or commiserate with you. 