Sales jobs for youths in Kenya

I recently completed my undergraduate and I have been actively searching for internships and Even jobs.

I have seen several Sales opportunities targeting youths, although the pay is small and the rest is based on commission this seems to be the most available opportunity for people like me.

Who has ever done a sales job?

What's your experience?

What tips can you give someone?

I am an introvert but I am willing to step out of my comfort Zone for the money. I am gathering information on what I will need to do to perform well since it will be my first time.