Just see your post on Gimpchat. You are asking about those GEGL plugins.
You want the bevel plugin: Once installed look in Tools -> GEGL Operation and in the drop down choose Bevel. Same grey text as previous post. Some settings as a guide.
This in kubuntu 22.04 / Gimp 2.10.32 (from PPA)
You want the bevel plugin: Once installed look in Tools -> GEGL Operation and in the drop down choose Bevel. Same grey text as previous post. Some settings as a guide.
This in kubuntu 22.04 / Gimp 2.10.32 (from PPA)