have been using this code to produce the below figure, but i cannot figure out how to adjust the left margin so that it does not cover the labels? could anyone help, ive tried everything
If I understand what you are after, you would like to adjust the x-axis scale so that there is more space on the left for the labels? You can achieve this using ggplot2's scale_x_continuous function.
I don't have the data clado2, but using the example code from the ggbiplot GitHub README: