I'm not an expert but getting better. I believe I see the second pic as having a flat belly(plastron) and smaller tail indicating female. The top pic looks like the belly(plastron) is concave(useful trait when mounting a dome shaped female) indicating a male. That one has a tail that's larger and held sideways indicating male as well.
I’m guessing the first pic is of a boy and second of a girl but I’m really more comfortable looking at RF’s anatomy (just seen a lot more of those and they look at lot more familiar to me)