Is it possible to draw an circular arrow like this?

[lmd]

[SillyFreak]

You can use CeTZ for this: arc, mark. Combining these, you should be able to draw a curved arrow:

#import "@preview/cetz:0.3.1"

#cetz.canvas({
  import cetz.draw: *

  arc(
    (0, 0),
    radius: 0.5,
    start: -45deg,
    delta: -270deg,
    mark: (
      end: "straight",
    ),
  )
})

[lmd]

How can I change the mark angel? I tried slant and it didn’t work well.

set-style(mark:(slant: -1))

[ParaN3xus]

I think the issue is not the angle, but rather that your arrow is too long. For example, when I adjust the length to 0.07, the result is much better.

#import "@preview/cetz:0.3.1"

#cetz.canvas({
  import cetz.draw: *

  arc(
    (0, 0),
    radius: 0.5,
    start: -45deg,
    delta: -270deg,
    mark: (
      end: "straight",
      length: 0.07,
    ),
  )
})

Preview

[blume]

I would probably use an icon library like tabler-icons or fontawesome for this purpose.

[sijo]

There are also the Unicode symbols that Typst calls arrow.cw and arrow.ccw, which you can rotate to your liking:

#rotate(90deg, sym.arrow.cw)

though the result will depend on the font you use

[Jollywatt]

Here’s an alternative way using fletcher, which adjusts the mark angle automatically to account for curvature.

#import "@preview/fletcher:0.5.3": diagram, node, edge

#diagram(edge((0,0), (0pt,10pt), "->", bend: 150deg, stroke: 1pt))