Life doesn't feel real

It's exactly how it sounds. I wake up every morning and everything feels like a dream. Sometimes I catch myself trying to "wake up" from life, or "snap out of it". The idea of existence and living to seems like a hallucination, like we're not supposed to be here. Even typing this reddit post right now doesn't feel real. I feel awful thinking this way too, since I've been a christian my entire life. I was taught to believe all of these facts and morals and beliefs or whatever, but what if none of this matters? What's even the purpose of this? Why are we here? Are we even here? What if this is all in our minds and the visuals and memories we have are all hallucinations? I've been thinking about this for a while now.