Cryptographic digital signatures

[Bitcoin]

Cryptographic digital signatures

I have a doubt since the public keys are known to everyone, so someone could falsify a transaction by writing down a deposit from a public address to another public address in a new block and solving the proof of work, but for a transaction to be valid, it has to be signed the signature is nothing more than the combination of the public key and the private key so according to me in the text of the block I should enter a transaction signature field I asked and this is how the block does contain a signature field the strange thing is I searched several block browsers and none of them included the signature field information.

I asked the forums, why didn't they do it? and what they answered me is that for block browsers that information is irrelevant because it is assumed that the transaction has already been signed but it omits this field in the information they show in the block browser so my question is where can I download all the complete information of a block that does not omit any detail?

Source: Cryptographic digital signatures