Obtain all unmatched query results using the Oracle Regular Expression

Obtain all unmatched query results using the Oracle Regular Expression

-- Not a number
Select * from dual where
Not REGEXP_LIKE ('1 is not a number 1', '^ [0-9] + \. {0, 1} [0-9] * $ ')

-- Is a number
Select * from dual where
REGEXP_LIKE ('1. 1', '^ [0-9] + \. {0, 1} [0-9] * $ ')

Application Scenario Analysis:
 
Today, we want to process data in the intermediate database that does not conform to the format requirements. We naturally think of regular expressions.
 
You can find the regexp_like function on the Internet to conveniently query data that meets the format requirements.
 
But how can I query data that does not match the regular expression?
 
Regular Expressions Do not support multiple characters to take non-characters, and the problem becomes entangled.
 
After collecting for half a day, I finally found the above results.