Hi,
Maybe an ICS subscription should help.
• Open Outlook on the web.
• Click Settings (gear icon) → View all Outlook settings.
• Go to Calendar → Shared calendars.
•Under Publish a calendar, select the calendar.
• Choose Can view all details.
• Click Publish.
• Copy the ICS link that appears.
Then add it to Google Calendar using the steps below:
• Open Google Calendar.
• Next to Other calendars, click +.
• Select From URL.
• Paste the ICS link and click Add calendar.
After this, Events added or updated in Outlook will automatically appear in Google Calendar when Google refreshes the feed.
I hope this information helps. If you have any more questions, don't hesitate to reach out.
Otherwise, please take a moment to rate the answer. Wishing you good luck!