The best alternatives to Kafbat UI are Untitled UI Icons, UI HUT, and Material UI. If these 3 options don't work for you, we've listed a few more alternatives below.
Untitled UI Icons are the ultimate free icon library for Figma. A clean, consistent, and neutral icon library crafted specifically for modern UI design. Made for Figma, in Figma.
This is a collection of Dos and Dont's for making your UI better. 100 pages = 100 tips. Almost every tip has an illustration, some of them have additional links to external resources.