You don’t need to run your own node.
Just make sure you don’t use a wallet that uploads your view keys to the node…
not true. watch the leaked Chainalysis video (e.g. currently available at https://odysee.com/@nyxmr:d/chainalysis:f, may not be in the future). they did a lot of their correlations by running nodes and observing transactions that were directly submitted through those nodes.
run your own full node.