Never really had these reservations. When I was in my teens, & even more insecure about my singing voice than I am now, I used to yearn to perform in our local church, by way of joining the 'folk' group that played there every week. It was an Anglican church with a fairly sizeable congregation, so the group regularly got a couple of numbers in while Communion was being administered, and maybe a third while the Lord's table was being cleared afterwards. But I never admitted to anyone that I could sing, and they never asked, so it was not to be.

In retrospect I think it was probably a lucky escape; their material wasn't terribly inspiring, and at times it was downright inappropriate. One week they did John Denver's "Goodbye Again": very pretty, but not really suited for the middle of a church service.