I need advice
 

Where to find an investor for profitable and high-quality e-commerce?

I think you can do it online. Now there are many portals that provide investment services in different projects and in different countries. If you visit this portal https://fairfunded.com/ , you will find here more information about what you need to present about your business ideas to get start-up capital or money to expand your business. I think this is very convenient, because with the help of this site and Skype you can get profitable investments from foreign entrepreneurs and you don't need to spend a lot of time on it.