MAC Calendars – BusyCal, Informant, Calendar 366 II – WANTED

[BigHat]

Hi Pirates,
 
I’m sick of big-business copying my information, and then using it for, among other things, to send advertisements to me.
 
I got Fantastical to replace Apple’s Calendar (used to be iCal), to find that Fantastical syncs with everything (including Apple Calendar !!!) – so no privacy…
 
I’d be grateful any of these (if they won’t copy my information): 
 
BusyCal
 
https://www.busymac.com/busycal/
 
Informant
 
https://pocketinformant.com/products/mac-organizer-app/
 
Calendar 366 II
 
https://nspektor.com/calendar366/mac
 
Greatly appreciate help on this – THANK YOU !!!!!