How do I practice the "true" religion of my ancestors?

My ancestors come from England. For 1400 years my ancestors have been Christian. The religion that preceded Christianity was Druidry.

How do I practice ancient English Druidry in 2025? The old sages of Albion left no sacred texts or manuscripts regarding the rubrics and dogma of Druidry. So any attempt I make to revive ancient English Druidry in the present would be pretentious and inauthentic.