What type of business can be the most profitable? What can you suggest?
Well the competition is huge, but that doesn't mean you don't have to try. And i must say that you need to try harder. Maybe it is a good idea to create a multi vendor ecommerce marketplace website in order to increase you chances for making profit. This way you will be able not only to sell your goods, but also acquire some part from sales of other sellers....Who knows how it will play out, but at least you could try
You do understand that competition is great and there are many businessess that actually propose the same services. I think that the most succesful businessess are those who can be flexible and use various means for their growth. Good advertising is also a thing in my opinion, as without it how people will know about you?