Wow, those are some long clips! I listened through the first one. Here's my (honest) feedback (not a German speaker).
Most of the time you sound to me like a woman speaking in a relaxed voice at the low end of her range; kind of middle-aged I guess? You sometimes slip just for a moment into a more male-sounding (heavy & large) tone, particularly at the end of phrases, but the effect is more "huh, that was weird" rather than "it's a man!".
By the second half you've climbed a semitone or two I think, and your expression is a bit more free and lively. It sounds a lot more natural, but slips stand out a little more.
Did you know you can do the same resonance adjustments when clearing your throat, coughing and so on? Perhaps if you started off with a more girlish "ahem" noise that might key listeners in to what you're going for.
Anyway, it was not at all unpleasant to listen to, and I think sounds fairly natural and feminine overall. Good job and thanks for sharing!