Accidentally cancelled the trial

Hello the apple community so I was browsing my new iPhone in settings and I had Apple Music trial for 6 months for free because of new phone that I bought and I went into my subscriptions to make sure it wouldn't renew next month but now the whole thing has cancelled and i can't use it? is there something i can do to get it back without paying? so stressful! i didn't mean to cancel it.

Thanks.