[1.18.2] how to summon lightning bolt

[HWN]

i want when my mob summoned, i called as a lightning

[Luis_ST]

Use EntityType#create to create a new instance of your Entity.
Then you can modify the Entity in the way you want (e.g change position, set some values, etc.)
After that use Level#addFreshEntity to add the Entity to the Level (World).

Note: Spawning Entities is a server only operation.