Why do some people think I'm either a joke, inexperienced, or not being just smart?

I get it, but it's not like they know me, and they don't. I may be young, but it doesn't mean I don't know everything. Me being young means I can learn many things, and when more decades come, I'd have better knowledge than the people who are a smartass.

I just simply don't care of what others think of me, if this is the case🤷🏾‍♂️. But for those who do support me, as well as giving me good advice, I'd give them respect in return. 👍