Is Lutheranism dying?

I have been discerning between denominations such as Anglicanism, Roman Catholicism, and eastern orthodoxy along with Lutheranism.

There is a confessional Lutheran church just down the street from me. They only have 15 to 20 members and almost all of them are older no younger members

Most of the Lutheran churches in and around my area are like this is the Lutheran Church dying?

I don’t want to invest my spiritual life, my time, my gifts and my talents if the Lutheran Church isn’t even going to be around in a decade.