Rollback data from database which was updated unintentionally

BEGIN TRY --Start the Try Block..
    BEGIN TRANSACTION -- Start the transaction..

        UPDATE MyCurrentAccount SET Amount = Amount - 1000
            WHERE AccountId = 004
 
        UPDATE MySavings SET Amount = Amount + 'sssdgsggs'
            WHERE AccountId = 004
 
    COMMIT TRAN -- Transaction Success!
END TRY
BEGIN CATCH
    IF @@TRANCOUNT > 0
        ROLLBACK TRAN --RollBack in case of Error
END CATCH


Create table   MyCurrentAccount(AccountId  int,Amount int) 
Create table  MySavings (AccountId  int,Amount int) 

select * from MyCurrentAccount

select * from MySavings

insert into MySavings values(004,50000)