Any tips or advice on a new seller starting PL FBA in 2022

hello all,

i have 20k capital for a new business venture and looking at alibaba for any type of niche products i can form a company around and improve the products specs like color, size etc,

my goal is to make 4k net per month after all said and done. i know most sells now are by using PPC which im okat with but trying to get margins to be 30% plus

any tips or sites that can help?