Seavenger Swim Fins/Flippers with Gear Bag for Snorkeling Diving, Perfect for Travel Blue S/M

Would these fit for someone who wears a men’s size 14?

My shoe size is exacly 13?

Woman's size 9.5 and Women's size 10. What size should I get?

Are these fins easy to walk in? I tend to fall when walking over rocks at the shore because the large fins are too long and not flexible. Thanks!