What should v do when v cant read 5 times namaz daily?

it depends on the circumstance really.

reading your 5 times namaaz is EXTREAMILY IMPORTANT

The Messenger of Allah (peace be upon him and his progeny) said: "The first thing that Allah made obligatory upon my Ummah was the five prayers; and the first thing from their acts of worship that shall be taken up will be the five prayers; and the first thing that they will be questioned about will be the five prayers."

Kanzul Ummal, Volume 7, Tradition 18859