The proper URL structure should look like are as follows:-
Include the primary keyword in your URL.
Include a (-) hyphen in the Keyword instead of underscore(_) or special characters.
Length should be short and precise.
Use lowercase in URL, not uppercase.
Article and prepositions should not be used in url like 'A', 'An', 'The', 'or', 'to', 'in', and 'form'.