Anyone know the alternative to Visio for Mac

Office 365.

omnigraffle

https://www.omnigroup.com/omnigraffle

I'm a visio cafe. If you have good network speed, you can choose the online program such as draw.io, luchidchart or creately. If you need the same desktop program like the Visio, you can use the Edraw Max or Omnigraffle. I used edraw for some years and like the ui.