Editing an existing Venue will apply the changes to all agendas using that specific Venue.
Create a new Venue for each meeting and name the Venue with the meeting date. Do this before creating the dated agendas so you can assign the date-specific Venue at the time of agenda creation. (When you create a new meeting it will show whatever Venue is in the template.)
Your Venue list currently contains several of the same name that are probably not needed if these were used for date specific Zoom links in the past. You could retain a generic Venue called something like 'Update to Meeting Date" with no link and use this in your agenda template. This way it stands out as needing correction if an agenda makes it onto your calendar without the correct date-specific Zoom link.
support.toastmastersclubs.org/doc/item/meeting-venues