Tier 2 Links for High DA (very low PA) Blog posts?

Hello I have a fitness website trying to rank for 10,000 monthly searches. Right now I am ranking on page 2 just from PBN's. However, I wanted to diversify my anchor text, so I creating about 3 blog posts on different websites that allows community blog posts.

So In short, I create three blogs linking to my website from 3 different domains in my niche.

The blog posts have very high DA 65, and DA 50, DA 45.

They have no page authority (Which is my problem)

What would you guys recommend to up the page authority?

I feel like those blog posts will be useless if they have no links pointing to them and essentially no PA.

What would you suggest?

Say I spam the Tier 2 links to those blog posts. Is there any risk for my money site?

So my idea is to Tier2(spam links or blog comments????)---->Tier1(niche relevant blog posts high DA)--->Money site.

Is there a lot of risk associated with this compared to PBN's?

Thanks in advance for suggestions!

It's safer than PBNs unless the "P" stands for private and not public. I suggest you build decent tier 2 links such as spun web 2.0 and article directory submissions and then blast those with thousands of spam links instead of sending the mass spam directly to the blog posts.

Interesting. Thanks for the advice. The article directory submissions sounds really good.