Ranking on Google means absolutely nothing if this one thing is missing.
If you're focusing on traffic or rankings, but this metric is not increasing, I hate to break it to you, SEO isn't working. Traffic is a vanity metric. Rankings are a vanity metric.
They don't pay the bills.
What actually matters is your conversion data. SEO is meant to connect search intent with revenue.
As an example, I might rank for what is SEO and that can bring me traffic, but ranking for SEO agency for e commerce is gonna bring me customers.
You don't want visitors, you want customers.