What is the plaintext for the following ciphertext, which was encrypted using a substitution cipher?

Hint: the plaintext is in English, and it's NOT a fixed$-$shift rotation cipher. You'll need to make use of

letter frequencies, and then try to spot common words. Hint: the most common letter in the

plaintext is T$.$ Use your best guesses and trial$-$and$-$error. Good luck!

$$VCEDJ JDCGFU CJ JNQISVU XQUJSN JDQG QGLJDCGE AMJ CJ CU KNBGE. GB TQJJSN DBK XQUJ VCEDJ JNQISVU, CJ XCGWU JDS WQNFGSUU DQU QVKQLU EBJ JDSNS XCNUJ, QGW CU KQCJCGE XBN CJ$.$

$$ JSNNL YNQJZDSJJ