Getting one order doesn’t mean you’ll get more and impressions mean nothing. Think of it this way: thousands of people see a billboard on a highway every day. Does that automatically mean the advertising company will get business? No. Not at all. Don’t equate impressions with likelihood of a sale. It doesn’t work that way.
Your gigs are have huge competition. I don’t know why so many sellers create gigs that are almost exactly the same as hundreds of other gigs. Do some research and create gigs based on what people want, but not many other people are doing. Your gigs just say “I will do x task” for you. That doesn’t convey your value. I can write songs for people, but that doesn’t indicate if I have talent, if my songs perform well for clients, etc.