SQl Query Like Square Bracket

DECLARE @SEARCH_STRING VARCHAR(255) = 'Whatever [!] the string is... It is for...'
DECLARE @counter INT = 0
DECLARE @stringlenght INT = LEN(@SEARCH_STRING)

WHILE (@counter<=@stringlenght)
BEGIN
    IF (SUBSTRING(@SEARCH_STRING, @counter,1)='[')
        SELECT CONCAT('A ''',  SUBSTRING(@SEARCH_STRING, @counter, 1), ''' has been found on ', CONVERT(VARCHAR(3), @counter), '. position.')
    SET @counter = @counter + 1
END

A '[' has been found on 10. position.

DECLARE @SEARCH_STRING1 NVARCHAR(MAX) = 'I Love My [India]'

DECLARE @SEARCH_STRING2 NVARCHAR(MAX) = 'I Love My India'


IF(@SEARCH_STRING1 LIKE '%[%' )
BEGIN 
PRINT '@SEARCH_STRING1 has ['
END
ELSE 
BEGIN 
PRINT '@SEARCH_STRING1 not Contain ['
END


IF(@SEARCH_STRING2 LIKE '%[%' )
BEGIN 
PRINT '@@SEARCH_STRING2 has ['
END
ELSE 
BEGIN 
PRINT '@@SEARCH_STRING2 not Contain ['
END