Regional flights - smaller commercial planes

Lately, I’ve been feeling a bit uneasy about flying, especially when it comes to smaller regional jets. I have an upcoming flight booked through American Airlines, but it’s operated by Envoy Air using an Embraer 175.

I know the E175 isn’t exactly tiny, but it’s definitely smaller than something like a Boeing 777, and that’s been sitting in the back of my mind. Is there any reason to be more concerned about safety with these smaller jets? Are the pilots flying for Envoy/American Eagle less experienced or trained differently than those flying mainline aircraft? I’ve read a little about how regional airlines operate, but I’d love to hear from anyone with more insight—or even some reassurance. Am I just overthinking this?