Build linear line visulalization in Kibana

Hello guys! I'm trying to build a straight linear line Kibana visualization using "Line" option. On Y-axis I have some metric with "Average" aggregation and on X-axis I have some timestamp duration with "Terms" aggregation.

As a result, I have a chart with a single line (please see below)


As we can observe it looks like a curved line but not a linear, I'm wondering is it possible to create a linear line but not curved as it is represented on a screenshot? Maybe there are some other options how we can extend the distance between numbers on X-axis to make it look like a linear line? Thanks in advance

Increase the aggregation size in the X axis timestamp.