Bitcoin Core -Reseeem Script Signature must be 0 if it fails (Multi) SIG operation error

For p2sh transactions, an example of a readEem script.

 CScript((my_private_key.pub,OP_CHECKSIG,OP_IF,OP_1,OP_ELSE,OP_1,OP_ENDIF))

If the expression is true, it works if it leads to execute the IF ‘S statement. In other words, the first signature matches. However, if the first signature does not match the public key, the site is returned instead of running an ELSE statement.

SendrawtransAction RPC Error -26: Visid -type script check -Flag (signature failure test must be 0 (Multi) SIG operation)

but, VerifyScript(txin.scriptSig, (txin_scriptPubKey), tx, 0, (SCRIPT_VERIFY_P2SH,)) There is no error. This is also a way to create a signature.

def create_OP_CHECKSIG_signature(tx, txin_scriptPubKey, seckey):
    
    sighash = SignatureHash(txin_scriptPubKey, tx, 0, SIGHASH_ALL)
    signature = seckey.sign(sighash) + bytes((SIGHASH_ALL))
    return signature
#usage
sig = create_OP_CHECKSIG_signature(tx, redeemscript, my_private_key)

Thank you all help.