Welcome. I think most of us experienced something similar, it is a blow to find out everything you believed is a lie. It does get easier with time, although you are right that there is no acceptable path to leave, at least to those who still believe. Don't rush anything or feel you have to take a stand right away, give yourself the gift of time to get used to this. How you leave can have repercussions, so make sure it's on your terms, it's not dishonest to hide your true thoughts from those who would use them to hurt you. You have been deceived and lied to, so think of it as using their tactics to protect yourself.
There is no need to rush to replace this religion with another belief system, people have struggled with these questions for centuries, you don't need to have the answers right away. As time goes on things will get easier and you will get some clarity on how to move forward. When I first left I wasn't sure if this religion was "the truth" or not, or even if I believed in God, I just knew I couldn't do it any more. I just didn't think about it for a while and focused on putting one foot in front of the other and eventually things came together.
Good luck on your journey out of the darkness.
Lisa🌹