M18 wanting to get into tech sales / appointment setting / high ticket sales

How do I get into tech sales, appointment setting and high ticket work?

I'm 18M from Sydney trying to break into this part of sales but can't seem to find a job or find much information online on how to get started?

For those who currently or have previously worked in these types of jobs, how did you get started - how much are you making and how can someone find a job?

Hope some people can help