I just deleted one table in Dev DB by mistake how to recover

a) Easy:

• No changes occurred after the DELETE, TRUNCATE or DROP statements and you have a full backup

>> Restore a previous full database backup

b) Hard:

• You have a full backup but …
• Some changes were made after the DELETE, TRUNCATE or DROP statements, or
• You cannot take the database offline

>> Use the full database backup to export the data and import it into the production database

c) Impossible?

• You don’t have a full database backup that contains the lost data
• You cannot take the database offline

• Some transactions were made on the database after the data was lost

source:- https://solutioncenter.apexsql.com/recover-sql-server-data-from-delete-truncate-drop/