Need help : Post nav

Hi everyone,

I need somme help, I’d like to modify my blog. At the moment to navigate in my blog there is :

1 2 3
Next> Last Page>

I’d like to have

1 2 3 … number of the last page
Next> Last Page>

Does someone can help me to resolve that ?
Thank you very much for your time !!

My blog : https://aventures-dici-et-dailleurs.com/