Just look for one online. That’s the best way to find qualified professionals these days; any attorney and law firm that is on top of their game will have an online presence by now. This is why when I needed an attorney a few months back, all I did was look up “best child custody lawyer near me” and then go over the first 10 results until I found 3 law firms that seemed solid enough to be worth booking a consultation with.
You will need to do some reading and some research. The number 1 result won’t always be the best. But as this link shows, most law firms will list their previous experience alongside client testimonials and case studies on their site. You can read those alongside reviews posted on third-party websites to get a sense of whether or not the law firm in question has the experience needed to handle your case.