I understand it goes against the very defintion of the term, but that's a thing.
I'm trying to steer away from my personal anecdotes, so for instance:
https://www.gotquestions.org/what-is-a-Christian.html
> Unfortunately over time, the word “Christian” has lost a great deal of its significance and is often used of someone who is religious or has high moral values but who may or may not be a true follower of Jesus Christ. Many people who do not believe and trust in Jesus Christ consider themselves Christians simply because they go to church or they live in a “Christian” nation.