Hi @techresearch7777777 ,
I need to track/get some metrics for some specific Tables of what queries (Select, Insert, Update, Delete),
You can check this link : https://learn.microsoft.com/en-us/sql/t-sql/statements/create-database-audit-specification-transact-sql?redirectedfrom=MSDN&view=sql-server-ver16
automatically upon SQL Server start on like when the Server gets rebooted?
I tested on my own I think that it is default to start automatically.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment"