My professor assigned an annotated bibliography and I'm stuck on finding credible sources, what strategy should I use?

I have a 1500-word annotated bibliography due in ten days for my sophomore English 102 class, and the professor insists every source must be peer‑reviewed. I've tried Googling and using the library catalog, but most results are either too general or behind paywalls. I'm not sure how to efficiently locate scholarly articles that actually support my topic without spending hours scrolling. Any advice on a systematic approach would really help.