Google Calendar's "known senders" filter should help stamp out spam invites
Google Calendar's new "known senders" option is supposed to make it easier to keep spam from clogging up your schedule. Toggling on the setting prevents invites from people you don't know from automatically appearing in your Calendar.
https://www.theverge.com/2022/7/20/23271485/google-calendar-known-senders-filter-spam-invites