I have a sedevacantist, Traditional latin mass, non diocese affiliated church near me. Sister i talked to maintains all other religions are destined for hell, even Lutherans.
Im open to a conversion but idk. Imo Jesus doesnt need the middleman but ive been wrong before.
This sums it up for me:
John 3:16
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.