When people say they don’t think Christianity is true, I usually say two things. One: if you seek God with all your heart (truly), He will answer. Two: just use logic. If there’s a devil, what one faith will he attack? The truth! Christianity and Judaism are the ones persecuted most through history (I’m not saying other faiths are not). In many places, people accept all faiths and ban Christianity. You can google all the resources on these topics online. I’m not a scholar with all my sources just saved in my phone. I’m off to work now. But there are resources available and many people willing to talk in depth on these topics. Reach out and find them! I’m just making a fast Reddit comment.