The thing about password entropy is that it doesn't matter how many special characters you have in your password, only that they are present because then the computer has more combinations to search through. For example, Foxtr0t! is just as secure as @e31z.P8, but much easier to remember. Helpful hint: long pass phrases are far more secure than random strings of letters and symbols, but easier to remember. thequickbrownfox would take around 5 million years to crack, compared to your example taking 87 years, which probably doesn't matter, but still a fun thought experiment

I think you misunderstand the relationship between password complexity, size of character set, and length. Consider:

Permutations = Charset size length

A 12 character password composed of just lowercase a-z is two orders of magnitude harder to crack than an 8 character one with lots of special characters in.