Kind of. Energy working is real. Taking energy from another human is called vamping them.
“Becoming a vampire” is not. real. Some people are born with damaged energy systems so they can’t take energy from the same sources everyone else can, it’s a disability not a plus. If you want to take energy from another person just do it, you don’t need to disable yourself first.
I realise it’s edgy and trendy, and I have unpopular opinions, as an energy worker, about it. I laid them out here:
Somebody piggy backing on Kabbalah and making it into something it’s not is disingenuous to say the least, and potentially damaging to your ascension at worst. If you want to do Kabbalah learn Kabbalah from reputable sources.
For genuine info on “real” vampirism, look up the work of Michele Belanger. She knows her stuff, from personal experience.