I will add that in my church one had to ask to join the confirmation class and were not going to be asked if they didn't show interest. I do not know how universal that is; it may have been an idiosyncrasy of our Rector.
I asked long long (decades) ago
The Rector of that church kind of blew me off, asked if I had a sponsor, and being new to the area, knew no one.....He said that it would be very difficult for me to get in if I did not have a sponsor . He was very unhelpful when I wanted to do confirmation classes.
I walked away disappointed, but also with the realization that I was probably better off without it Now, I no longer wish to do it.
I had found , up until then , that church membership often brought more problems than benefits. Decades later, I have realized that membership is never worth the hassle.
There are two nearby churches of which I participate. They are different in belief and teaching, but very similar in charity and community works
I told the pastor at one that I do not give a rodent's rectum what someone believes, but I do care whether someone has food on the table, clothes to wear, or a safe place to sleep at night. and if I can affect any one of those, then it is MY belief and MY duty to do so. If for example. kids do not have food to eat and go to bed hungry, well THAT I do care about.
Attending some class or Sunday morning meeting is unimportant by comparison when there are humans that could be helped and by which I do have the ways and means to do so.
I believe that both Jesus and Buddha were Spot on in regard to possessions, non materialism and altruism. I mean how much wealth do we need to hoard when there are starving children in this world that we should and can help. That is much more important than membership in some group or attending some class.
All about priorities here.