Hello for better understanding

when we browse category page, for example:
https://www.chemindutissu.fr/categorie/tissu-enfant/

the page is loaded in a loop, the reason is in background, next pages are loaded!

https://www.chemindutissu.fr/categorie/tissu-enfant/page/2
https://www.chemindutissu.fr/categorie/tissu-enfant/page/3
https://www.chemindutissu.fr/categorie/tissu-enfant/page/4
…….

You see that in the chrome web console, network tab.

How to fix this issue? it badly affects the user experience and SEO.

Thank you.