Well, I’d probably recommend going to a church. That’s where most people repent, especially Catholics.
Jesus is spirit and is as close as a prayer that opens up your heart for Him to enter, which He will if asked in sincerity. You have to be willing to want Jesus... if the whole idea of a Savior of your soul is utterly indifferent to you, then you are not at the point of being able to accept. God won’t barge into the heart that does not want Him. It might be a monstrous oversimplification, but is very true, to say that Christianity is getting the right spirit in your heart, a spirit that is God, when before you were riding upon a spirit that was not God. The Bible goes into much, much further detail about what the qualities of this spirit is... loves, forgives, watches, supports, warns, directs, feeds, and much more.