How to make labels clearer in factoextra::fviz_cluster plot

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I've plotted this cluster plot

factoextra::fviz_cluster(clustsub.k2,clustsub, pointsize = 1.2 ,labelsize = 12)
clustsub.k2

And this is the result: enter image description here

How do I make the labels clearer? I can't read any of the numbers.

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