Problem with infinito wallet, can I create raw transaction with private key?

I have some ada (byron) on infinito wallet, at moment i found that i can’t withdraw my ada, transaction fail with error - “The network faces short term issue”. I made a request to inifito wallet support, but I want to know if I know my private key generated by infinito wallet can I send raw transaction in command line interface or by using python, can you please provide an example for doing this, if this possible?

+1, same issue. and 0 support from wallet team, start to think that this is scam!