Welcome to the board.
Jesus said, "I am the way, the truth, and the life." Therefore, NO religion is the "truth". Can we have a personal relationship with Jesus and Jehovah without being tied to a religion? YES! Jesus told his disciples that He would send them a helper - the Holy Spirt - to teach them everything they needed to know. If you ask the Holy Spirit to teach you what you need to know, that's all you need. Don't need all those Bible aids! As for being a sinner - there are no degrees of sin. We are ALL sinners! That's why Jesus died for us - to pay our sin debt in FULL. It's over, finished. The only thing we have to do is confess to our heavenly father - not to any man - that we recognize that we are sinners, and need the Holy Spirit to help us. No need to keep feeling guilty or to keep trying to change your life. The Holy Spirit will even do that for you!
P.S. I was a JW for 30 years. I'm 58 now and glad to be out and know the real "truth" about Jesus.