Can I use raycast to make a laser effect?

Questions & Answers
1

Can a raycast be made visible in the actual game and not just in the editor?

Unity make this comment -

Note: This is for debugging playmode only. Editor gizmos should be drawn with Gizmos.Drawline or Handles.DrawLine instead.

which if I’ve understood means that raycast can only be used for debugging uses?

2

You can use the LineRenderer to display in game