I am far from an expert in this area, but I have been lurking around here long enough that I have a few suggestions.
1) Join the Voice Verified channel on Yahoo or now on fetlife.com. This does a couple things for you. First you know the people that are running it are legit. The first thing they will want to do is voice verify you just as they have done with every other member there. They may also do the Video Chat thing with Skype or Zoom or whatever. The second thing they will do is give a community of people with prior experience who can recommend or tell you to avoid certain individuals. I get the vibe that people that say one thing then do another don't last long there. They are also really good about warning their members about prolific posers.
2) Make and Post a verification picture of yourself - Basically this is a picture of you holding a sign stating your nickname here and what you are looking for. Ideally it should be hand written as this is tougher to fake. It does not have be overly sexy or show your face. It should show enough that people can identify you as female. There are many ladies here with pics like this. Here is an example
https://www.freecatfights.com/forums/index.php?action=profile;area=pictures;u=6477;view=50030 If you post it, be aware that there are some posers that may try to hijack it. You may only want to share it on a platform like Unsee. This will at least make it a bit harder to duplicate, embeds watermarks on the images, and offers some protection without sharing a lot of information.
3) If you go with the verification picture, you should insist that your potential opponents share a similar one with you. If they say stuff like "I don't have a camera", they are a poser. This is 2020. Unless you are living under a rock you have some kind of camera or access to a camera. If they are unwilling to meet you halfway, you probably didn't want to go any further with them anyway.
4) Ask for references - If they claim they have a X-Y record, they should be able to connect you with at least one of those past foes. While it may sound counter intuitive for your first match, it is usually better to have it with somebody with some experience. You'll be more likely to loose the match, but have a much better experience.
5) Meet in public first - If you get a bad vibe, bail out. Better safe than sorry.