THE FACT ABOUT SLOT PG AUTO THAT NO ONE IS SUGGESTING

By default, if you add a 2nd standby that participates in the replication quorum then pg_auto_failover increments its number-sync-standbys from zero to 1 making sure that rather, Whenever your Most important node is the one 1 still left, then all transactions which are producing data are placed on-keep till a standby node is offered all over again.