Thanks for your question.
This is a profound area to discuss, and probably much larger than our little reply can do justice, so let me cut to the chase.
People are inherently religious, and they will make a false religion as a substitute for true religion when true religion is rejected or unknown. Science can become religion for some, politics for others, success, fame, wealth, and on and on. We hold that God:
- is indeed real
- has created a true religion, and
- made that clear through His Son, Jesus Christ.
Jesus Christ made claims that no other man of religion, wisdom, philosophy, politics, or any other tradition of metaphysics ever did. He claimed:
- equality with God
- the power to forgive men's sins, and
- that He alone is "the Way, the Truth and the Life," and
- that "No one comes to the Father, except through Him."
So, Jesus is either a liar, very confused and quite possibly insane, or he is telling the truth.
Still others will claim He never made those claims but only the Christians who came after Him — which is non-sense because, for the first few centuries, Christians were martyred wholesale for following their Crucified Lord, and the very rise of Christianity is predicated on the historicity of Christ and His Resurrection, which is essential to understanding the whole Gospel.
Christianity is a religion based on Jesus Christ, so you must go to His claims and examine them to see if He is credible. I would start with John's Gospel, and read the first chapter, slowly, taking in all its implications. That is where you will find answers to your questions.
Also, the Catholic Church is the True Church He started because He built in it on the Apostles, with Peter as the chief, (Matthew 16:13-19, Matthew 18:15-20) and that position is held by the Pope today. Where the Pope is, that is where Christ's Church is.