If I try to apply Bevel modifier to Object - nothing happens, changing Amount, Segments.. Only "Absolute" Width type actually adds tiny bevel but I can't change neither the Amount, only Segments. If I try to do it manually, by selecting all and CTRL+B it bevels all the edges. I would want it to act like Bevel Modifier. What could be fix for Bevel Modifier, or how to set the CTRL+B to bevel only Edges like Bevel modifier would do, sharp edges.
Clamp Overlap option prevent two bevels overlap each other. Basically it clamps bevel width by the shortest distance between two beveling edges:
If disabling Clamp Overlap reveals bevels, try to remove vertexes that's close to each other.
Select all - press M ⇾ By distance may help