How do I delete a repeating Zoom event from my calender?

During the pandemic a relative set up a weekly Zoom event with the family. Since we are no longer having 

this weekly event I have tried to delete it from my calender .  It is impossible !!!!! When I try to delete the event I get a message of options- all of the events or just the one  . I pick all up to no avail.  The events disappears and is back in less than a second. UGH