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That can’t cause the shaking unless one of your steppers is not working.
Draw or cut a large square and check it’s diagonals. If they are within a 1/32nd” leave it be. There is nothing else to check. If you are cutting a perfect square, your steppers are all powered , your rails are smooth, your belts are properly tensioned, nothing is wrong other than you can see it shake. One of those has to be the problem, or there is no problem?
Is that shaking only when you control it with the lcd? When you run gcode does it work fine?