Super Glue can fix cuts on leather
This isn't true. Super glue should never be used on leather as it isn't flexible with leather. Super glue hardens once applied, hence should not be applied to leather as it can cause further damage to it.

Olive oil makes your leather look new
Leather absorbs the oil as leather fabric is absorbent, this absorbed oil can cause the leather to lose its color. Hence olive oil should never be used on leather.

Leather cuts cannot be repaired
Leather cuts might be difficult to repair but not impossible. Leather cuts can be repaired with the correct equipment