A foundation for a safe and welcoming library for anybody is staff that treats people equally, with an attitude of kindness and genuine welcome. There must be a commitment to respecting the privacy and protecting the intellectual freedom of all patrons, including youth. Youth need a space where they feel accepted, and the library can be that space.
Read more:
Rand, L. Visible or Not: Library Access for LGBTQ Youth. Intellectual Freedom Blog. https://www.oif.ala.org/oif/?p=18104