Question: When uses PCA? When my data is small and with a few features. When I have an overfit case. You want to find latent features

When uses PCA?
When my data is small and with a few features.
When I have an overfit case.
You want to find latent features and reduce dimensionality.
Every time before uses a Machine Learning algorithm.
When uses PCA? When my data is small and with a

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