We can use both NOT and LIKE operators in Salesforce SOQLs. Please check the following SOQL for reference.
Sample SOQL:
SELECT Name
FROM Account
WHERE NOT Name LIKE 'Test%' 
NOT LIKE Operator in Salesforce SOQL
We can use both NOT and LIKE operators in Salesforce SOQLs. Please check the following SOQL for reference.
Sample SOQL:
SELECT Name
FROM Account
WHERE NOT Name LIKE 'Test%'