How do I get started baby sitting?

Hello, my name is Chess! Growing up, I was the eldest sibling by eight years, and frankly I raised my siblings. In addition, even when I was an only child I was obbsessed with the idea of baby sitting or being an older sibling. I come from a not so good home, and Im 17, I moved out a little earlier this year and my birthday is coming up. Now, when I ask how I get started, I generally already know. Look for listings searching for a sitter in my area that I have transportation to or even post a listing. Unfortunately. Im not the kind of person I can Imagine people wanting to hire. Im a transgender man and wear mostly an alternative style (of course I wouldnt be dressed all up in that sort of get up baby sitting) Not only that, but I have a loud additude and I dont keep quiet on my opinions. When you are a trans man who is stubborn, people usually just take that and say aggressive but Im not. I do not look or act like a childcare worker of any kind, but I want to be. When I interact with children I am not the same edgy teenager who is a little loud in public places. I am in love with gentle parenting practices and used to study them all through my pre teen years. I know, no matter how convincing I am about how I should get a chanse or that I am good with kids that people NEED to be picky when choosing a sitter. I want people to be picky, there's not enough pearents in this world who are picky, and above all keeping the children safe should be the number one concern.

I have a impressive resume for my age, constant volenteer gigs and years on a farm, but I would like to know if theres any free courses online I could take maybe that would maybe put some peoples minds to ease?

Any other opinions or advice would be greatly appreciated, thank you all.

Note: Not sure if I should include pictures of me or not for reference but I think imagination would be better. Im 5'2 and Alaskan Native/Italian... So my resting B*tch face is awful. When I say I dress alt, I mean baggy pants and generally a 2010 douche vibe? I have more child appropriate outfits. So no scary monsters on my shirt and not so baggy pants, but Im just nervous to put myself out there.