I would think theoretically, true christians all believe in life after death and wouldn't be afraid of dying. Yet I find that majority of religious people to not be like that. So is that implying that they are of weak faith or doubt? I mean if you truly believe in afterlife and that you will go to heaven which is a better place to live, wouldn't one accept death and not fear it? Also wouldn't they place their lives in God's hand on whether he decides if it's your time or not? This Covid has really brought out that aspect in a lot of "christians" IMO.
But Jesus said that many would come to Him and say "Lord, Lord', and He will say 'depart from Me, I never knew you, you workers of iniquity', Matt 7:23. Or Rev 3:16 "So because you are lukewarm, and neither hot or cold, I will spew thee out of My mouth'. Allot of people might be religious but don't know Jesus. Not all religious are true born-again Christians. How many people do you know are excited and passionate about Jesus and sharing Jesus to everyone they know? I personally don't know anyone like that, except for maybe my mother. Most religious people are probably lukewarm Christians that have one or two unconfessed sins they are toying with (most Christians probably look at porn especially if they are men, or gossip if they are women), or are just not excited enough to share their faith with others.
There are also plenty of youtube videos of Christians, who thought they were saved, end up in hell, and people they didn't know would end up in hell. At the end of the day, you don't know people's hearts and if they are really right with God or have maintained the integrity of their faith. Just because someone say they are a Christian doesn't mean they really know the Jesus of the Bible.
The modern church has allot of 'cheap/easy' grace where people don't have to really repent or deal with their sins and just coast along a spiritual la la land. It is not the same thing that was in a previous time ago, when being a Christian meant a surrendered holy life of purity. Now it's a cool thing. Just allot of mixed messages going around.