You don't have to depend on this platform alone for such if you are genuine in your endeavour. E-commerce is better marketed in social media space so use your handle to market through your social media friends in Facebook, YouTube, X etc. There you have friends who already know you either physically and you can relate with them P2P, your worth will be appreciated with them more.
You are correct, It could be hard to gain trust over here knowing that is hard to deal with newbies and no reputable member will like to associate with a newbie who has nothing to lose. So E-commerce suit better on social media otherwise relying here i think is a very bad idea as non will be interested to contact and ship goods using his services, that is why it's important to know where to market our products and brands for his case social media is best.