Amount of visitor too high - CookieID piwikpro

I figured out there to much quantity of visitor on my website (piwikpro installed on wordpress).
I configured piwikpro as RGPD compliant.
After investigating I figured out piwik pro set a different cookie ID to each event or page navigation.
For instance :
• one visitor landed on my website (cookie ID A)
• the same visitor navigated to another link by clicking on internal links (cookie ID B)
• the same visitor cliked to another link and go to another page (cookie ID C)

Afterwards piwikpro counted 3 visitors when it is clearly the same visitor.

However when I navigated to my the website. I can see the cookie ID is the same when I’m navigating into it :

But it seems that’s not working like that on my piwikpro reports.

Is anyone can help me please ? is that a normal behavior ? how can i fix that maintaining a GDPR compliancy

Hi, could you please provide me with a URL of you website? You could leave it here or send it to me via private message if you prefer to.