Cannot control Impressions on Fiverr. Impressions are recorded when someone searches for any gig related to your own, and your gig shows up (loads) in the search results. You earn one impression every time this happens.
You also earn an impression if someone visits your gig category, and your gig image shows up on the category page that loads.
Impressions, therefore, are merely a stat that tells you how many times your gig was seen in search results (or category pages) on Fiverr.
Impressions are ONLY registered on Fiverr in the ways noted above.
You cannot control search behavior, and you cannot control where your gig shows up on your category page. Therefore, don’t worry about impressions. It can be a valuable stat to be aware of, but there is absolutely no way for you to control this stat. You cannot “get more impressions”.
Now, orders, that’s a different story. If you want more orders, and you aren’t receiving as many as you would like on Fiverr, then you’re going to have to spend some time marketing your gigs OFF of Fiverr. Figure out who your target customers are, research to find out where these customers are located, and then go to those locations and tell those customers about the services that you offer.
YOU are responsible for the success of your own gigs.
If you don’t want to do any marketing work to be seen, then you probably aren’t going to receive many orders.