Calendar, help or ideas

I would like to have my different calendars in HA. My main problem is that my basic work calendar (at the office) is on MS Outlook (not 365) and the other one is on my phone (Samsung 8+ calendar), so I don’t use google calendar at all. Right now in my phone calendar I can see all the events, appointments, and basically all the info I need.

Is there a any way to integrate this in HA?

*I have tried to import them all in a google calendar but I was not able to add the office calendar