Oh man. Don't waste your time. There is a whole paper about trying to crack wallets by using the lattice attack. They tried most transactions already... . Try something new.
If you want to try anyways: best way is to modify bitcoin core so it saves all transactions r,s,z to a file. I have those modifications but won't give them away for free.
Here is the paper (very nice read and Nadia Heninge is really impressive woman):
https://eprint.iacr.org/2019/023.pdfVideo to the paper:
https://www.youtube.com/watch?v=6ssTlSSIJQEEdit: Sorry, I did not read your OP completely. For only one address just check on blockchain.com (or similar blockchain browser) and get the values. You can easily automate it with something like beautifulsoup for python...
I can create such script but again not for free
.
Edit2: Ahh I forgot. Best method for particular address is to use electrum server api. It's very easy. I have the code.