same R value is used for two different addresses? finding z1 and z2 value and privatekey
Calculating the private key from a signature (r and s) requires that you know the message (to calculate the "z" value) and the "k" value (which is used by the signer to derive the r value via a trapdoor function).

Calculating the "k" value (needed above) requires two signatures (you need two s values) which sign two different messages (you need two z values) using the same private key and the same r (therefore the same k) value.

In your question, you reference two transactions signed by different private keys (which you know by noticing their public keys differ), and therefore you do not have enough information to correctly calculate the k value.

In the other similar question you recently asked, the two transactions were signed by the same private key (and they have the same r &amp; k), so in that case it is possible to calculate the private key. (The service you linked to appears to calculate it correctly, however it doesn't display the uncompressed address.)