Spacing the axis labels in shiny R

I have built a shiny app. Our team is monitoring a group of 110 people who are conducting field surveys. The bar graph in the attached image below shows the average duration of surveys taken by the enumerators. But the axis labels are quite congested. I want the labels to be adequately spaced. How can I do it? The code is shown below:

      geom_bar(mapping = aes(fill=en_name),width = 0.5,stat = "identity",show.legend = F)+
      labs(title = "Enumerator-wise Duration of surveys",
           x="Name of Enumerator",
           y="Average Duration (in minutes)")+
      theme(plot.title = element_text(face="bold",hjust=0.5,size=20),
            text = element_text(family="a"),
            axis.title = element_text(face = "bold",size=15),
            axis.text = element_text(size = 6))

What is the purpose of the chart ? i.e. how would it be useful to your users ?
It seems like too much info, and hard to read in general.
If you want to know who is the quickest and who is the slowest ; then do a chart for top 10 and a chart for bottom 10, and forget the middle....

The purpose is to give feedback to the surveyors. Yeah the bottom 10 option is a nice one. It just slipped my mind. Thanks for that suggestion.

Oh thanks for the help. I will try that out.

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