Such code, Much wow, very FizzBuzz
First, use the doge version for everything possible:

    such fizzbuzz much max
        much very i is 0 next i smaller max next i more 1
            very result
            rly i % 3 is 0
                result more "Fizz" next
            wow
            rly i % 5 is 0
                result more "Buzz" next
            wow
            console dose with result or i next
        wow
    wow


As it's a fun fun language, making use of but rly is more important than optimizations:

    very result
    rly i % 3 is 0
        result is "Fizz" next
    but rly i % 5 is 0
        result is "Buzz" next
    but rly i % 15 is 0
        result is i


Making another function for printing instead keeping the result variable looks even better:

    such print much result 
        console dose loge with result
    wow       


    such fizzbuzz much max
        very i is 1
        much next i smaller max next i more 1
          rly i % 15 is 0
              plz print with "FizzBuzz"
          but rly i % 3 is 0
              plz print with "Fizz"
          but rly i % 5 is 0
              plz print with "Buzz"
          but
              plz print with i
          wow
        wow
    wow