"If" statement and LEDs not working correctly

I just noticed my earlier reply was cut off.. Not sure if it changes things

I am not using one.

I am adding or removing 5v at pin #8 (physically removing the 5v wire)

My thought was, if 5v is at pin#8 to the true code, if the 5v is removed, to the else code.

I will have a manual switch which will add or remove the 5v to pin#8.

My understanding is HIGH is 5v, LOW is 0v

Could I add an "else if" after the above "if" to do something else if pin #8 is LOW, then do "this"