My LO is 13 months old n is still crawling and cruising .. I'm worried why he hasn't started to attempt to try to walk.

My firstborn only started walking at 15 months and my cousin at 18 months. Let your LO develop at his pace. It should only become a concern at 18 months if he still doesn't walk. There is also old wives tale that state that the child will enjoy good life if he walks later rather than earlier .