When people say that you have a high voice... you don't whatsoever. For God's sake, your fundamental frequency is all the way down below 100 Hz, and never even made it higher than 105 Hz. It was so low that Praat couldn't even pick it up because it was below the bottom 75 Hz threshold so often. My voice was NEVER that deep, and I couldn't even speak that deeply if I tried. What you do have, though, is the female inflections, which people misinterpret as a pitch problem because most people don't really understand the mechanics of what makes a voice sound male or female, they just hear more female inflections and immediately equate that with highness.
That is the real problem. You're still speaking with female inflections. You're still doing the voice slurring thing that teenage girls do, where you drag your words out. You're still doing the female "S" sound with the hiss. And you're not speaking with power or bluntness, and taking a lot of pauses, which is a more feminine thing. Guys tend to speak with very choppy words, where there's clear divisions between the words, and the words come out quickly and with authority behind them.
You spoke in the video like this: "Why is it that every tiiiime.... that a biiiill... is paaaassssed.... in regards to like..." Where a guy would just say very clearly "Why is it that every single time that a bill is passed about trans people using..." and the words "every" "single" and "time" would get accented with staccato-type enunciation that would make them seem blunter. Guys accent words by making them shorter and choppier, and putting a bit more force behind the consonants. Girls accent words by using different pitches and stretching the words out.
Mannerism-wise, same thing, you just have to learn to dominate the space that you're in a bit more. You don't look relaxed in the video. Your arms are in, you're leaning forward, and you look a bit nervous. A more masculine behavior would be to look a bit more chill... have your arms out, project an aura of "yep... I got this. I've got something to say, and you're going to listen" rather than "okay, so I'm sitting here talking to the camera, I hope I look all right." Confidence is the #1 thing. Own the space. Look comfortable. Sit relaxed, spread out, don't be so inward and tense.
That's what I can see. It's not appearance whatsoever, it's just a matter of getting the mannerisms down. Which is fine. It comes with time.