If you ever want to chain anal your own txns read this series of research or forget about your privacy and ID yourself onchain forever.

https://medium.com/oxt-research/understanding-bitcoin-privacy-with-oxt-part-1-4-8177a40a5923

https://medium.com/oxt-research/understanding-bitcoin-privacy-with-oxt-part-2-4-20010e0dab97

https://medium.com/oxt-research/understanding-bitcoin-privacy-with-oxt-part-3-4-9a1b2b572a8

https://medium.com/oxt-research/understanding-bitcoin-privacy-with-oxt-part-4-4-16cc0a8759d5