Displaying exactly 6 random entries from table

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PHP

MySQL

database

I am trying to display exactly 6 random 'entertainment' entries, but with my current query it's getting a random number between 1 and 6, and displaying that number of entries. How do I update this query in order to make it display exactly 6 random entertainment entries from my Articles table? Also, I am trying to avoid ORDER BY RAND().

table Articles
 - id (int)
 - category (varchar)
 - title (varchar)
 - image (varchar)
 - link (varchar)
 - Counter (int)
 - dateStamp (datetime)

What I have tried:

 SELECT
    r1.*
FROM
    Articles AS r1
    INNER JOIN (SELECT(RAND() * (SELECT MAX(id) FROM Articles)) AS id) AS r2
WHERE
    r1.id >= r2.id
    AND r1.category = 'entertainment'
LIMIT 6;