Question: "Can I be a follower of Jesus Christ without becoming a member of a church?"
No, this is impossible. The reason is that Christ cannot be separated from His church. It is "His body, the fullness of Him" (Ephesians 1:23).
God planned the church from the beginning of the world. He planned that He would save both Jews and Gentiles in one body, the church (Ephesians 1:23).
The Bible says that the Lord adds the saved to the church (Acts 2:47). The church is made up of those who have come to believe in Christ, repented of their sins, and who have been immersed for the remission (forgiveness) of their sins (Acts 2:38, 41, 47).
Although it is true that Christ does the saving, not the church, still we can't be saved outside of the church, because it is the saved! When the Lord saves us, we automatically become members of His body, His church.