According to me 5 best Punjabi songs are
1.Lahore by Guru Randhawa
2.Badnaam by Mankirt Aulakh
3.Suit by Nimrat Khaira
4.Insane by Sukhe
5.Dill toh Black by Jassi Gill
But songs depends upon you you can visit the site of latest Punjabi songs and you can find your favourite songs these are favourite songs of fine