LTC nodes for electrum


I am new in LTC, sorry if I open this issue in a wrong way. I have some LTC in Electrum LTC and I want to send my LTC to a new wallet. The problem is I cannot broadcast the transaction, because all saved LTC nodes are not working. Can you please send a new list? Alternatively, I have the json of the transaction signed, how may I use it?
Thank you in advance.