Many UX/UI designers create the initial interface in Adobe Illustrator or Photoshop. I have been involved in a lot of projects where that is the method for design comps. But Adobe XD, which is similar to Figma, is a great option for sharing comps with developers. The samples below were created using XD.
Early prototype for a product customization interface.
Black Friday countdown banner to run prior to sale.
Black Friday banner to activates when the sale is going on.
Prototype for a web banner at various screen sizes.