Sharper export in XD in 1x

Quick Question, I often work on designing Google Ads and other platform ads in XD which involves small sizes such as 300x50, 320x50, 160x600 and so on. When I export the file in PNG/JPEG in 1x , the export quality is not that great and often looks blurry as compared to Illustrator export. Now I can export to 2x which makes it far better, but platforms like Hubspot, 6sense only accept 1x size and hence the 2x wont work. How do you suggest I export to get a crystal clear sharp export in 1x. Your help is much appreciated.