R - get variable response to cover more points

Question

Hi community,
I have a explainer which I got from a Random Forest model in R. When trying to plot the Partial Dependence Plot, the plot only gives about 10 points for the plot.
How do I get R to plot more points? The variable I'm plotting should have plenty of points available in the data. How do I customise the scale, assuming there is a way?
Thanks!