Don’t broadcast your transactions via your own node. Use
mempool.space/pushtx
coldcard.com/pushtx
pushtx.org/pushtx
blockstream.info/tx/push
over VPN or Tor for broadcasting.
GM, it likely goes beyond just running nodes
https://www.nobsbitcoin.com/linkinglion-an-entity-linking-bitcoin-transactions-to-ips/
Discussion
Samourai Wallets Dojo or RoninDojo fixes this. Every connection is through Tor.
Don't use clear net services like the mentioned above!