I forgot my bitcoin core passphrase. Is there anyway I can recover?
No.  The whole point of strong encryption is that it is impossible to recover the data without the passphrase.

You can:


Keep trying to brute force (maybe with faster computers, or a better initial guess at the passphrase)
See if you have a backup of the wallet.dat file that isn't encrypted
Try really hard to remember
Give up, and resolve to be more careful with strong encryption next time.