Compete against high DA

I’ve been doing a bunch of keyword research for the niche I’m looking at. There’s a variety of corners of the niche to explore but as I’m doing the research, I keep seeing high (40+) DA sites on page 1 of google.

Adding more to get a long tail doesn’t seem to be helping. Sometimes the PA varies but they’re pretty decent as well.

The overall niche is wide with many places to seemingly niche down and cover but it also seems like there’s just high DA sites everywhere

So how do you guys compete with high DA sites in order to better rank? Is DA as important as PA? Just let your site age in and gather DA as you move along?

TIA