What is the error: Err:3 Index of /i2p-maintainers/i2p/ubuntu noble InRelease Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key 0A2DD0D3D9BB5DF7484D76B1A6D4480DE82574BB, which is needed to verify signature. Signing key on 474BC46576FAE76E97C1A1A1AB9660B9EB2CC88B is not bound: Policy rejected asymmetric algorithm because: RSA1024 is not considered secure since 2014-02-01T00:00:00Z
Unless you added more stuff since your initial question - delete the i2p.list
Judging from the other entries you already blindly followed a whole lot of guides without knowing what you do, so no guarantee that the system isn’t already damaged.