Outlook Calendar

I have an old (2022) weekly Zoom meeting stuck in my Outlook calendar that I have been unable to remove from my Outlook calendar for over 1 year now. It has my calendar frozen and unusable. It also has slowed down the use of my MacBook laptop.

I have spoken to Microsoft and Apple who have not had any solutions.

I have to turn the Outlook calendar off to be able to use my other calendars. 

Please let me know what you suggest I do to get this removed from my Outlook Calendar.