Take a day or two away from people entirely, just you and your Bible, a beach, a mountain, forest park etc.
It has been men that have confused you and you have allowed them. Since the devil cannot undo any mans salvation, his next attack is to cause them to doubt it, never forget that anyone who comes accusing, you can be sure the devil is behind it. Put on the helmet of salvation, (You know a helmet is on your head, know you are wearing your salvation) it makes you immune to vain janglings, fair speeches and accusers and the sword of the spirit will do the rest.
Still praying for you, but the rest is down to you and the Lord by and through his spirit, which is why I suggest a day at least away from all people and immerse yourself in the Lord and his Holy written word.

Ephesians 6:17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God:

I agree with Peopleoftheway.

You said "as you once did" If you are saved it is all about getting back to where God can use you and that is a heart issue at this point.