If you want decentralized you need freedom in clients. There are a lot of pretty good nostr clients: Primal, Amethyst, X21.social, Yakihonne, Nostrudel, Jumble

If you want decentralized you need freedom in clients. There are a lot of pretty good nostr clients: Primal, Amethyst, X21.social, Yakihonne, Nostrudel, Jumble. And most of them are OSS