Advantages of the PNP program are:
The major benefit of getting a nomination from a Canadian province is that it increases your CRS score to an additional 600 points.
Even if you have a low CRS score, many provinces accept you and will give you nominations to get Canadian PR.
Many provinces will issue nominations even without you having a job offer.
If you have fewer scores in the section of IELTS, it is better to opt for a PNP.