Website Ranking Issue

Hello, guy's Hope you all doing well.

I have the website which is approx 10 months old with high-quality content on it.last couple of month its all keywords and ranking drop, and I have noticed someone copy my whole website content and publish their own site which ranks very well.No massage in GWM. any suggestion.

Thanks

My suggestion is someone needs to check both sites to see what happened.

I am new in BHW so due to limitation, I'm unable to send website URL.

Duplicate content can really hit you hard. It just sucks that you're the one that got the worst of it. I also hope that I can see both sites, so I can evaluate it.