If you already know the exact dimensions, panel interface and electrical limits, then searching for the panel you need is easy on panelook.com. Then, having decided on the panel (or several options), first go to search in local stores (some even provide the service of installing the panel right in front of you in half an hour or an hour, drink coffee), if you don't find it, look in the companies of your country and if you don't find it, eBay, Ali and etc. After carefully discussing with the seller that you will definitely get the right model, because often the Chinese sellers cheat and write in the description several options (even cheaper ones) and send them randomly. This is the usual careful choice of a competent buyer and, in general, an adult capable person. I see no problem finding it all on my own.
As I already wrote, if you need 100% confidence with a flicker free model, take only LG. Otherwise, there are many more choices.