Sneezing is not really tha tmuch of a gender marker, and yours does not sound like it is explosive really - I think you are fine
In the last recording you definitely sound female, but you should just let out the laugh more if you like. you seem to stifle it.
The other three recordings sound like you are forcing the voice down. Darn, just relax about your voice. Just seriously relax and dont force it up or down or anything, just sit, breathe, think about a nice green forest or something, breathe some more and then when breathing out add a natural sound to it by just allowing your vocal chords to be touched by the breath - very softly and then louder . Make an O or U sound for example - just really relaxed and not thinking about pitch at all, just about the breathing and the air. Let yourself surprise what sound will come from it, dont push it to something you would think is best.
Maybe get a voice therapist to help you with relaxation. I think your voice is all right, no need to worry. Did you ever have an ENT chack out your vocal chords and get an endoscopic picture? Maybe you have a synchenia or shortened vocal chords by nature