"After some days Felix came with his wife Drusilla, who was Jewish. He sent for Paul and listened to him as he talked about faith in Christ Jesus. But as Paul went on discussing about goodness, self-control, and the coming Day of Judgement, Felix was afraid and said, “You may leave now. I will call you again when I get the chance.” At the same time he was hoping that Paul would give him some money; and for this reason he would often send for him and talk with him. After two years had passed, Porcius Festus succeeded Felix as governor. Felix wanted to gain favour with the Jews so he left Paul in prison."

(Acts 24.24-26 GNB)

Felix had plenty of opportunities for one-on-one time with Paul. He could have learned enough contextual background from his wife about the Messiah and listened to Paul about Jesus. But he did not convert.

He did not see it beneficial for him.

Many people go to church expecting something. They go but not necessarily follow Jesus. They do not grasp what is for them.

To each their own. But one must invest time and effort to seek. Seekers find what is for them.