Scroll down arrow on easy fullwidth slider?

hi team
i had an issue that i poste on another (unnanswered)thread about fullscreen slider that randomly turned two of my images into REALLY fullscrren sliders,contrary to the square sized slider images i had until now(see “qui sommes nous” page)

in the process of finding a solution i experimented with the easy fullwidth slider and it turns out i like it that way! so my question is:

can we add a scroll down arrow to the fullwidth easy slider? or can we make a fullscreen slider the same size as the easy fullwidth slider?

thank you guys