3018 CNC Z axis Noise Reduction, Reduce Vibration Fix Endmill Chatter

I'm trying to fix all the vibration point on my 3018 CNC. The vibration was causing endmill chatter.
Metric Tap Kit
https://www.amazon.com/gp/product/B07N4GD6JW/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07N4GD6JW&linkId=1436197379b8bb50b2a196b7d1bbdad1

CNC in this video
https://www.amazon.com/gp/product/B08332BR39/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B08332BR39&linkId=99d43374b6f11b5031bed2fe6578cc00