These stories were told to steady your heart.
Why the surah gathered all these prophets
Allah tells the Prophet ﷺ that He related all these stories of the messengers to make his heart firm. They show how the prophets were rejected and harmed, and how Allah helped the believers. Ibn Abbas and Mujahid said "in this" means this surah: it brings the truth, an admonition, and a reminder for the believers.
You feel alone in trying to live your faith: the only one praying at the office, the only one in the family who fasts. Read the stories again. Nuh, Hud, Salih, Shu'ayb, Musa all stood where you stand, and they were helped.
No one has ever faced what I am facing.
The prophets faced it before me, and their stories are there to steady my heart.
Reread one prophet's story from this surah tonight and note one thing that steadies you.